Michael Fabian Dirks
137 lines
4.3 KiB
C++
137 lines
4.3 KiB
C++
/*----------------------------------------------------------------*\
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| Linker Options: -static-libgcc -static-libstdc++
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| Linker Libraries: user32
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\*----------------------------------------------------------------*/
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#Include <windows.h>
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struct Display {
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int left;
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int top;
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int right;
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int bottom;
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Display* nextDisplay;
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Display* prevDisplay;
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};
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Display* firstDisplay = NULL;
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Display* lastDisplay = NULL;
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BOOL CALLBACK _EnumerateDisplaysProcedure(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData);
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STDAPIV_(void) Utility_EnumerateDisplays() {
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/* Clean up the Linked List first. */
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if (firstDisplay) {
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Display* displayPointer = firstDisplay;
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while(displayPointer) {
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Display* thisDisplay = displayPointer;
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displayPointer = displayPointer->nextDisplay;
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delete thisDisplay;
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}
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firstDisplay = NULL;
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lastDisplay = NULL;
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}
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EnumDisplayMonitors(NULL, NULL, _EnumerateDisplaysProcedure, 0);
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}
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BOOL CALLBACK _EnumerateDisplaysProcedure(HMONITOR hMonitor, HDC hdcMonitor, LPRECT lprcMonitor, LPARAM dwData) {
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Display* thisDisplay = new Display;
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ZeroMemory(thisDisplay,sizeof(thisDisplay));
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if (!firstDisplay) firstDisplay = thisDisplay;
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if (!lastDisplay) {
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lastDisplay = thisDisplay;
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} else {
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lastDisplay->nextDisplay = thisDisplay;
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thisDisplay->prevDisplay = lastDisplay;
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}
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thisDisplay->left = lprcMonitor->left;
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thisDisplay->top = lprcMonitor->top;
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thisDisplay->right = lprcMonitor->right;
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thisDisplay->bottom = lprcMonitor->bottom;
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lastDisplay = thisDisplay;
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return TRUE;
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}
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STDAPIV_(int) Utility_GetDisplayCount() {
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int displayCount = 0;
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Display* displayPointer = firstDisplay;
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while (displayPointer) {
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displayCount++;
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displayPointer = displayPointer->nextDisplay;
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}
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return displayCount;
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}
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STDAPIV_(void) Utility_GetDisplay(int displayId, LPRECT display) {
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int displayCount = 0;
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Display* displayPointer = firstDisplay;
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while (displayPointer) {
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if ((displayCount == displayId) && (display) && (displayPointer)) {
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display->left = displayPointer->left;
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display->top = displayPointer->top;
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display->right = displayPointer->right;
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display->bottom = displayPointer->bottom;
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}
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displayCount++;
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displayPointer = displayPointer->nextDisplay;
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}
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}
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LRESULT CALLBACK _CloseWindowProcedure(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
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struct WindowUserData {
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Int oldWindowProcedure;
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Int oldUserData;
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Int closeCount;
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};
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STDAPIV_(void) Utility_InstallCloseHandler(HWND hwnd) {
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If (hwnd) {
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WindowUserData* hwndData = New WindowUserData;
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ZeroMemory(hwndData, sizeof(hwndData));
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hwndData->oldWindowProcedure = SetWindowLong(hwnd, GWL_WNDPROC, (LONG)&_CloseWindowProcedure);
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hwndData->oldUserData = SetWindowLong(hwnd, GWL_USERDATA, (LONG)hwndData);
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}
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}
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STDAPIV_(void) Utility_UninstallCloseHandler(HWND hwnd) {
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If (hwnd) {
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WindowUserData* hwndData = (WindowUserData*)GetWindowLong(hwnd, GWL_USERDATA);
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If (hwndData) {
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SetWindowLong(hwnd, GWL_USERDATA, hwndData->oldUserData);
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SetWindowLong(hwnd, GWL_WNDPROC, hwndData->oldWindowProcedure);
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Delete hwndData;
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}
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}
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}
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STDAPIV_(Int) Utility_GetCloseCount(HWND hwnd) {
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If (hwnd) {
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WindowUserData* hwndData = (WindowUserData*)GetWindowLong(hwnd, GWL_USERDATA);
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If (hwndData) {
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Int toReturn = hwndData->closeCount;
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hwndData->closeCount = 0;
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Return toReturn;
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}
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}
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Return 0;
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}
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LRESULT CALLBACK _CloseWindowProcedure(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
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WindowUserData* hwndData = (WindowUserData*)GetWindowLong(hwnd, GWL_USERDATA);
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If (hwndData) {
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switch(uMsg) {
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Case WM_CLOSE:
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Case WM_DESTROY:
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hwndData->closeCount++;
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Return False;
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Default:
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Return CallWindowProc((WNDPROC)hwndData->oldWindowProcedure, hwnd, uMsg, wParam, lParam);
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}
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} Else {
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Return DefWindowProc(hwnd, uMsg, wParam, lParam);
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}
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}
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BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) {return TRUE;} |