zwei leere Fenster anzeigen
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ich möchte nichts anderes als zwei leere Fenster anzeigen:
Fenster1 wird angezeigt... Fenster2 nicht - warum?//----------------------------------------------------------------------------- // Defines #define WIN32_LEAN_AND_MEAN // MFC wird nicht benoetigt //----------------------------------------------------------------------------- // Header #include <windows.h> #include <TCHAR.h> //----------------------------------------------------------------------------- // Event Handler LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch(msg) { case WM_DESTROY: PostQuitMessage(0); return 0; default: break; } return (DefWindowProc(hwnd, msg, wparam, lparam)); } //----------------------------------------------------------------------------- // Main int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdline, int nCmdShow) { WNDCLASSEX winclass; winclass.cbSize = sizeof(WNDCLASSEX); winclass.style = CS_VREDRAW | CS_HREDRAW | CS_OWNDC | CS_DBLCLKS; winclass.lpfnWndProc = WindowProc; winclass.cbClsExtra = 0; // extra class info space winclass.cbWndExtra = 0; // extra window info space winclass.hInstance = hInstance; // assign the application instance winclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); winclass.hCursor = LoadCursor(NULL, IDC_ARROW); winclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); winclass.lpszMenuName = NULL; // the name of the menu to attach winclass.lpszClassName = __T("WINCLASS1"); // the name of the class itself winclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION); RegisterClassEx(&winclass); HWND hwnd; hwnd = CreateWindowEx( NULL, __T("WINCLASS1"), __T("Fenstertitel"), WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 200, 200, NULL, // handle to parent NULL, // handle to menu hInstance, // instance of this application NULL); if(hwnd==NULL) return -10; // create a second window HWND hwnd2; hwnd2 = CreateWindowEx( NULL, __T("WINCLASS1"), __T("Fenster 2"), WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 300, 300, NULL, // handle to parent NULL, // handle to menu hInstance, // instance of this application NULL); if(hwnd2==NULL) return -11; UpdateWindow(hwnd2); ShowWindow(hwnd2, 0); MSG msg; while(GetMessage(&msg, NULL, 0, 0)) { // translate any accelerator keys TranslateMessage(&msg); // send the message to the window proc DispatchMessage(&msg); } return 0; }
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unteranderem weil du net ShowWindow(hwnd); aufrufst... du sagst nur das der ShowWindow(hwnd2); machen soll -.- und anders
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(D)Evil schrieb:
unteranderem weil du net ShowWindow(hwnd); aufrufst... du sagst nur das der ShowWindow(hwnd2); machen soll -.- und anders
Nein, das ist es nicht, da er ja bei beiden WS_VISIBLE als Style übergibt, dann ist das ShowWindow(hwnd); nicht mehr erforferlich.
mfg.
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läßt man folgenden Code weg:
UpdateWindow(hwnd2); ShowWindow(hwnd2, 0);dann funktiniert es. Ich hab aber keine Ahnung warum...
also:
//----------------------------------------------------------------------------- // Defines #define WIN32_LEAN_AND_MEAN // MFC wird nicht benoetigt //----------------------------------------------------------------------------- // Header #include <windows.h> #include <TCHAR.h> //----------------------------------------------------------------------------- // Event Handler LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) { switch(msg) { case WM_DESTROY: PostQuitMessage(0); return 0; default: break; } return (DefWindowProc(hwnd, msg, wparam, lparam)); } //----------------------------------------------------------------------------- // Main int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdline, int nCmdShow) { WNDCLASSEX winclass; winclass.cbSize = sizeof(WNDCLASSEX); winclass.style = CS_VREDRAW | CS_HREDRAW | CS_OWNDC | CS_DBLCLKS; winclass.lpfnWndProc = WindowProc; winclass.cbClsExtra = 0; // extra class info space winclass.cbWndExtra = 0; // extra window info space winclass.hInstance = hInstance; // assign the application instance winclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); winclass.hCursor = LoadCursor(NULL, IDC_ARROW); winclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); winclass.lpszMenuName = NULL; // the name of the menu to attach winclass.lpszClassName = __T("WINCLASS1"); // the name of the class itself winclass.hIconSm = LoadIcon(NULL, IDI_APPLICATION); RegisterClassEx(&winclass); HWND hwnd; hwnd = CreateWindowEx( NULL, __T("WINCLASS1"), __T("Fenstertitel"), WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 200, 200, NULL, // handle to parent NULL, // handle to menu hInstance, // instance of this application NULL); if(hwnd==NULL) return -10; // create a second window HWND hwnd2; hwnd2 = CreateWindowEx( NULL, __T("WINCLASS1"), __T("Fenster 2"), WS_OVERLAPPEDWINDOW | WS_VISIBLE, 0, 0, 300, 300, NULL, // handle to parent NULL, // handle to menu hInstance, // instance of this application NULL); if(hwnd2==NULL) return -11; // UpdateWindow(hwnd2); //ShowWindow(hwnd2, 0); MSG msg; while(GetMessage(&msg, NULL, 0, 0)) { // translate any accelerator keys TranslateMessage(&msg); // send the message to the window proc DispatchMessage(&msg); } return 0; }
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ups hab jetzt herausgefunden woran es liegt:
ShowWindow(hwnd2, 0 );ist gleichbedeutend mit
ShowWindow(hwnd2, SW_HIDE );