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// |
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// Copyright (C) 2004-2005 Martin Wickett |
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// |
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|
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#include "hookdll.h" |
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#include <windows.h> |
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#include <winuser.h> |
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#include <stdio.h> |
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#include <stdarg.h> |
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|
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#include "wtsapi32.h" |
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#include "Cchannel.h" |
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|
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#define DLL_EXPORT extern "C" __declspec(dllexport) |
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|
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// Shared DATA |
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#pragma data_seg ( "SHAREDDATA" ) |
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|
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// this is the total number of processes this dll is currently attached to |
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int iInstanceCount = 0; |
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HWND hWnd = 0; |
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|
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#pragma data_seg () |
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|
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#pragma comment(linker, "/section:SHAREDDATA,rws") |
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|
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#define snprintf _snprintf |
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|
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bool bHooked = false; |
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bool bHooked2 = false; |
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bool bHooked3 = false; |
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HHOOK hhook = 0; //cbt |
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HHOOK hhook2 = 0; //shell |
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HHOOK hhook3 = 0; //wnd proc |
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HINSTANCE hInst = 0; |
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HANDLE m_vcHandle = 0; |
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|
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|
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void SendDebug( char *format, ... ) |
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{ |
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va_list argp; |
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char buf [ 256 ]; |
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|
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va_start( argp, format ); |
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vsprintf( buf, format, argp ); |
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va_end( argp ); |
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|
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if ( ChannelIsOpen() ) { |
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WriteToChannel( "DEBUG1," ); |
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WriteToChannel( buf ); |
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WriteToChannel( "\n" ); |
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} |
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} |
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|
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|
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|
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BOOL APIENTRY DllMain( HINSTANCE hinstDLL, DWORD ul_reason_for_call, LPVOID lpReserved ) |
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{ |
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switch ( ul_reason_for_call ) { |
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case DLL_PROCESS_ATTACH: { |
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// remember our instance handle |
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hInst = hinstDLL; |
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++iInstanceCount; |
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OpenVirtualChannel(); |
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break; |
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} |
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|
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case DLL_THREAD_ATTACH: |
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break; |
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case DLL_THREAD_DETACH: |
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break; |
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case DLL_PROCESS_DETACH: { |
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--iInstanceCount; |
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CloseVirtualChannel(); |
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} |
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break; |
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} |
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|
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return TRUE; |
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} |
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|
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LRESULT CALLBACK CallWndProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hhook3, nCode, wParam, lParam ); |
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} |
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|
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PCHAR buffer = NULL; |
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char windowTitle[ 150 ] = { "" |
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}; |
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HWND windowHandle = NULL; |
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HWND windowHandle2 = NULL; |
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char result[ 255 ] = { "" |
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}; |
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char strWindowId[ 25 ]; |
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char type[ 25 ]; |
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|
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LONG b, t, l, r; |
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char strX[ 5 ]; |
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char strY[ 5 ]; |
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char strW[ 5 ]; |
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char strH[ 5 ]; |
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|
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CWPSTRUCT *details = ( CWPSTRUCT * ) lParam; |
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CREATESTRUCT *cs = ( CREATESTRUCT * ) details->lParam; |
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LONG dwStyle = GetWindowLong( details->hwnd, GWL_STYLE ); |
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WINDOWPOS *wp = ( WINDOWPOS * ) details->lParam; |
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RECT *rect = ( RECT * ) details->lParam; |
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|
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switch ( details->message ) { |
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|
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case WM_SIZING: |
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case WM_MOVING: |
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if ( !( dwStyle & WS_VISIBLE ) ) |
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break; |
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|
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if ( !( dwStyle & WS_DLGFRAME ) ) |
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break; |
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|
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snprintf( result, sizeof( result ), |
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"POSITION1,0x%x,%d,%d,%d,%d,0x%x", |
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( int ) details->hwnd, |
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rect->left, rect->top, |
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rect->right - rect->left, |
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rect->bottom - rect->top, |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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buffer = result; |
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break; |
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|
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|
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/* Note: WM_WINDOWPOSCHANGING/WM_WINDOWPOSCHANGED are |
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strange. Sometimes, for example when bringing up the |
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Notepad About dialog, only an WM_WINDOWPOSCHANGING is |
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sent. In some other cases, for exmaple when opening |
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Format->Text in Notepad, both events are sent. Also, for |
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some reason, when closing the Notepad About dialog, an |
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WM_WINDOWPOSCHANGING event is sent which looks just like |
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the event that was sent when the About dialog was opened... */ |
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case WM_WINDOWPOSCHANGING: |
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|
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if ( !( dwStyle & WS_VISIBLE ) ) |
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break; |
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|
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if ( !( dwStyle & WS_DLGFRAME ) ) |
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break; |
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|
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if ( !( wp->flags & SWP_NOZORDER ) ) { |
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snprintf( result, sizeof( result ), |
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"ZCHANGE1,0x%x,0x%x,0x%x\n", |
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details->hwnd, |
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wp->flags & SWP_NOACTIVATE ? wp->hwndInsertAfter : 0, |
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0 ); |
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result[ sizeof( result ) - 1 ] = '\0'; |
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buffer = result; |
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} |
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break; |
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|
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|
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case WM_CREATE: |
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if ( cs->style & WS_DLGFRAME ) { |
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snprintf( result, sizeof( result ), |
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"CREATE1,0x%x,0x%x\n", |
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details->hwnd, 0 ); |
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buffer = result; |
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} |
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break; |
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|
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|
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case WM_DESTROY: |
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if ( dwStyle & WS_DLGFRAME ) { |
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snprintf( result, sizeof( result ), |
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"DESTROY1,0x%x,0x%x\n", |
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details->hwnd, 0 ); |
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buffer = result; |
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} |
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|
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break; |
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|
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|
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default: |
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break; |
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} |
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|
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if ( ChannelIsOpen() ) { |
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if ( buffer != NULL ) { |
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WriteToChannel( buffer ); |
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} |
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} |
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|
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return CallNextHookEx( hhook3, nCode, wParam, lParam ); |
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} |
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|
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LRESULT CALLBACK CbtProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hhook, nCode, wParam, lParam ); |
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} |
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|
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|
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PCHAR buffer = NULL; |
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|
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|
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char windowTitle[ 150 ] = { "" |
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}; |
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HWND windowHandle = NULL; |
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char result[ 255 ] = { "" |
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}; |
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char strWindowId[ 25 ]; |
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char type[ 25 ]; |
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|
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|
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LONG b, t, l, r; |
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char strW[ 5 ]; |
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char strY[ 5 ]; |
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char strX[ 5 ]; |
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char strH[ 5 ]; |
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RECT rect; |
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|
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int i = 0; //tmp |
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|
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switch ( nCode ) { |
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case HCBT_MINMAX: |
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|
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windowHandle = ( HWND ) wParam; |
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//get win name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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|
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//get an id for it |
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itoa( ( int ) windowHandle, strWindowId, 10 ); |
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|
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//get operation type(min,max). if max, do not clip at all,if min use window's previous coords |
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//codes are: |
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|
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// SW_HIDE= 0 SW_SHOWNORMAL=1 SW_NORMAL=1 SW_SHOWMINIMIZED=2 SW_SHOWMAXIMIZED=3 SW_MAXIMIZE=3 |
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// SW_SHOWNOACTIVATE=4 SW_SHOW=5 SW_MINIMIZE=6 SW_SHOWMINNOACTIVE=7 SW_SHOWNA=8 SW_RESTORE=9 |
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// SW_SHOWDEFAULT=10 SW_FORCEMINIMIZE=11 SW_MAX=11 |
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|
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itoa( ( int ) lParam, type, 10 ); |
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|
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//get coords |
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GetWindowRect( windowHandle, &rect ); |
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b = rect.bottom; |
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t = rect.top; |
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l = rect.left; |
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r = rect.right; |
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ltoa( b - t, strW, 10 ); |
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ltoa( t, strY, 10 ); |
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ltoa( r - l, strH, 10 ); |
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ltoa( l, strX, 10 ); |
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|
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//get name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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|
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////setup return string |
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strcat( result, "MSG=HCBT_MINMAX;OP=4;" ); |
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|
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// SW_SHOWNOACTIVATE=4 SW_SHOW=5 SW_MINIMIZE=6 SW_SHOWMINNOACTIVE=7 SW_SHOWNA=8 SW_RESTORE=9 |
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// SW_SHOWDEFAULT=10 SW_FORCEMINIMIZE=11 SW_MAX=11 |
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strcat( result, "ID=" ); |
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strcat( result, strWindowId ); |
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strcat( result, ";" ); |
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strcat( result, "TITLE=" ); |
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strcat( result, windowTitle ); |
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strcat( result, ";" ); |
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strcat( result, "X=" ); |
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strcat( result, strX ); |
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strcat( result, ";" ); |
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strcat( result, "Y=" ); |
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strcat( result, strY ); |
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strcat( result, ";" ); |
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strcat( result, "H=" ); |
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strcat( result, strH ); |
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strcat( result, ";" ); |
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strcat( result, "W=" ); |
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strcat( result, strW ); |
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strcat( result, ";" ); |
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strcat( result, "TYPE=" ); |
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strcat( result, type ); |
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strcat( result, "." ); |
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|
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//------------------------------------------------------------------------------------------------- |
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// code to prevent minimising windows (can be removed once minimise has been implemented) |
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//i = (int)lParam; |
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//if (i==0 || i==2 || i==6 || i==7 || i==8 || i==11) |
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//if ( i==2 || i==6 ) |
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//{ |
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// MessageBox(0,"Minimising windows is not allowed in this version. Sorry!","TS Window Clipper", MB_OK); |
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// return 1; |
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//} |
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//----------------------------------------------------------------------------------------- |
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|
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//------------------------------------------------------------------------------------------------- |
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// code to prevent maximising windows (can be removed once maximise has been implemented) |
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//i = (int)lParam; |
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//if (i==3 || i==9 || i==11) |
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//if (i==3 || i==11) |
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//{ |
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// MessageBox(0,"Maximising windows is not allowed in this version. Sorry!","TS Window Clipper", MB_OK); |
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// return 1; |
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//} |
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//----------------------------------------------------------------------------------------- |
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|
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buffer = result; |
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|
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break; |
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|
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default: |
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break; |
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} |
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|
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if ( ChannelIsOpen() ) { |
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if ( buffer != NULL ) { |
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WriteToChannel( buffer ); |
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} |
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} |
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|
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return CallNextHookEx( hhook, nCode, wParam, lParam ); |
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} |
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|
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|
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LRESULT CALLBACK ShellProc( int nCode, WPARAM wParam, LPARAM lParam ) |
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{ |
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if ( nCode < 0 ) { |
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return CallNextHookEx( hhook, nCode, wParam, lParam ); |
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} |
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|
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if ( ChannelIsOpen() ) { |
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PCHAR buffer = NULL; |
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|
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char windowTitle[ 150 ] = { "" |
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}; |
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HWND windowHandle = NULL; |
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char result[ 255 ] = { "" |
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}; |
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char strWindowId[ 25 ]; |
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LONG b, t, l, r; |
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char strW[ 5 ]; |
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char strY[ 5 ]; |
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char strX[ 5 ]; |
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char strH[ 5 ]; |
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RECT rect; |
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|
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switch ( nCode ) { |
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case HSHELL_WINDOWCREATED: |
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|
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//get window id |
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windowHandle = ( HWND ) wParam; |
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itoa( ( int ) windowHandle, strWindowId, 10 ); |
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|
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//get coords |
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GetWindowRect( windowHandle, &rect ); |
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b = rect.bottom; |
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t = rect.top; |
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l = rect.left; |
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r = rect.right; |
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ltoa( b - t, strH, 10 ); |
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ltoa( t, strY, 10 ); |
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ltoa( r - l, strW, 10 ); |
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ltoa( l, strX, 10 ); |
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|
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//get name |
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GetWindowText( windowHandle, windowTitle, 150 ); |
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|
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////setup return string |
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strcat( result, "MSG=HSHELL_WINDOWCREATED;OP=0;" ); |
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strcat( result, "ID=" ); |
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strcat( result, strWindowId ); |
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strcat( result, ";" ); |
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strcat( result, "TITLE=" ); |
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strcat( result, windowTitle ); |
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strcat( result, ";" ); |
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strcat( result, "X=" ); |
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strcat( result, strX ); |
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strcat( result, ";" ); |
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strcat( result, "Y=" ); |
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strcat( result, strY ); |
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strcat( result, ";" ); |
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strcat( result, "H=" ); |
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strcat( result, strH ); |
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strcat( result, ";" ); |
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strcat( result, "W=" ); |
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strcat( result, strW ); |
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strcat( result, "." ); |
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|
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buffer = result; |
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|
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break; |
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|
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case HSHELL_WINDOWDESTROYED: |
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|
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//get window id |
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windowHandle = ( HWND ) wParam; |
394 |
itoa( ( int ) windowHandle, strWindowId, 10 ); |
395 |
|
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//get coords |
397 |
GetWindowRect( windowHandle, &rect ); |
398 |
b = rect.bottom; |
399 |
t = rect.top; |
400 |
l = rect.left; |
401 |
r = rect.right; |
402 |
ltoa( b - t, strH, 10 ); |
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ltoa( t, strY, 10 ); |
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ltoa( r - l, strW, 10 ); |
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ltoa( l, strX, 10 ); |
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|
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//get name |
408 |
GetWindowText( windowHandle, windowTitle, 150 ); |
409 |
|
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////setup return string |
411 |
strcat( result, "MSG=HSHELL_WINDOWDESTROYED;OP=1;" ); |
412 |
strcat( result, "ID=" ); |
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strcat( result, strWindowId ); |
414 |
strcat( result, ";" ); |
415 |
strcat( result, "TITLE=" ); |
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strcat( result, windowTitle ); |
417 |
strcat( result, ";" ); |
418 |
strcat( result, "X=" ); |
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strcat( result, strX ); |
420 |
strcat( result, ";" ); |
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strcat( result, "Y=" ); |
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strcat( result, strY ); |
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strcat( result, ";" ); |
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strcat( result, "H=" ); |
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strcat( result, strH ); |
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strcat( result, ";" ); |
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strcat( result, "W=" ); |
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strcat( result, strW ); |
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strcat( result, "." ); |
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|
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buffer = result; |
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|
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break; |
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default: |
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break; |
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} |
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|
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if ( buffer != NULL ) { |
439 |
WriteToChannel( buffer ); |
440 |
} |
441 |
} |
442 |
|
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return CallNextHookEx( hhook, nCode, wParam, lParam ); |
444 |
} |
445 |
|
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DLL_EXPORT void SetCbtHook( void ) |
447 |
{ |
448 |
if ( !bHooked ) { |
449 |
hhook = SetWindowsHookEx( WH_CBT, ( HOOKPROC ) CbtProc, hInst, ( DWORD ) NULL ); |
450 |
bHooked = true; |
451 |
} |
452 |
|
453 |
if ( !bHooked2 ) { |
454 |
hhook2 = SetWindowsHookEx( WH_SHELL, ( HOOKPROC ) ShellProc, hInst, ( DWORD ) NULL ); |
455 |
bHooked2 = true; |
456 |
} |
457 |
|
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if ( !bHooked3 ) { |
459 |
hhook3 = SetWindowsHookEx( WH_CALLWNDPROC, ( HOOKPROC ) CallWndProc, hInst, ( DWORD ) NULL ); |
460 |
bHooked3 = true; |
461 |
} |
462 |
} |
463 |
|
464 |
DLL_EXPORT void RemoveCbtHook( void ) |
465 |
{ |
466 |
if ( bHooked ) { |
467 |
UnhookWindowsHookEx( hhook ); |
468 |
bHooked = false; |
469 |
} |
470 |
|
471 |
if ( bHooked2 ) { |
472 |
UnhookWindowsHookEx( hhook2 ); |
473 |
bHooked2 = false; |
474 |
} |
475 |
|
476 |
if ( bHooked3 ) { |
477 |
UnhookWindowsHookEx( hhook3 ); |
478 |
bHooked3 = false; |
479 |
} |
480 |
} |
481 |
|
482 |
DLL_EXPORT int GetInstanceCount() |
483 |
{ |
484 |
return iInstanceCount; |
485 |
} |
486 |
|
487 |
int OpenVirtualChannel() |
488 |
{ |
489 |
m_vcHandle = WTSVirtualChannelOpen( WTS_CURRENT_SERVER_HANDLE, WTS_CURRENT_SESSION, CHANNELNAME ); |
490 |
|
491 |
if ( m_vcHandle == NULL ) { |
492 |
return 0; |
493 |
} else { |
494 |
return 1; |
495 |
} |
496 |
} |
497 |
|
498 |
int CloseVirtualChannel() |
499 |
{ |
500 |
BOOL result = WTSVirtualChannelClose( m_vcHandle ); |
501 |
|
502 |
m_vcHandle = NULL; |
503 |
|
504 |
if ( result ) { |
505 |
return 1; |
506 |
} else { |
507 |
return 0; |
508 |
} |
509 |
} |
510 |
|
511 |
int ChannelIsOpen() |
512 |
{ |
513 |
if ( m_vcHandle == NULL ) { |
514 |
return 0; |
515 |
} else { |
516 |
return 1; |
517 |
} |
518 |
} |
519 |
|
520 |
int WriteToChannel( PCHAR buffer ) |
521 |
{ |
522 |
PULONG bytesRead = 0; |
523 |
PULONG pBytesWritten = 0; |
524 |
|
525 |
BOOL result = WTSVirtualChannelWrite( m_vcHandle, buffer, ( ULONG ) strlen( buffer ), pBytesWritten ); |
526 |
|
527 |
if ( result ) { |
528 |
return 1; |
529 |
} else { |
530 |
return 0; |
531 |
} |
532 |
} |