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POno window appears in Visual C++ program
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copied!<p>I am developing an Win32 application where user logins when the application starts in a login window and then the main window opens</p> <p>But when I run the program nothing appears. </p> <p>Here's the code</p> <pre><code>HINSTANCE ghInstance; HWND hWnd; HWND hWndPopUp; LRESULT WINAPI PopUpWndProc( HWND hWnd2, UINT msg, WPARAM wParam, LPARAM lParam ); LRESULT WINAPI MainWndProc( HWND hWnd , UINT msg , WPARAM wParam , LPARAM lParam ); int WINAPI WinMain(HINSTANCE hInstance , HINSTANCE hPrevInstance , LPSTR lpszCmdLine , int nCmdShow){ WNDCLASS wc; WNDCLASS wcPopUp; MSG msg; //HWND hWnd; BOOL bRet; if( !hPrevInstance ) { wc.lpszClassName = L"MainAppClass" ; wc.lpfnWndProc = MainWndProc ; wc.style = CS_OWNDC | CS_VREDRAW | CS_HREDRAW ; wc.hInstance = hInstance ; wc.hIcon = LoadIcon( NULL, IDI_APPLICATION ) ; wc.hCursor = LoadCursor( NULL, IDC_ARROW ) ; wc.hbrBackground = (HBRUSH)( COLOR_WINDOW+1 ) ; wc.lpszMenuName = NULL ; wc.cbClsExtra = 0 ; wc.cbWndExtra = 0 ; RegisterClass( &wc ) ; wcPopUp.lpszClassName = L"PopUpAppClass" ; wcPopUp.lpfnWndProc = PopUpWndProc ; wcPopUp.style = CS_OWNDC | CS_VREDRAW | CS_HREDRAW ; wcPopUp.hInstance = hInstance ; wcPopUp.hIcon = LoadIcon( NULL, IDI_APPLICATION ) ; wcPopUp.hCursor = LoadCursor( NULL, IDC_ARROW ) ; wcPopUp.hbrBackground = (HBRUSH)( COLOR_WINDOW+1 ) ; wcPopUp.lpszMenuName = NULL ; wcPopUp.cbClsExtra = 0 ; wcPopUp.cbWndExtra = 0 ; RegisterClass( &wcPopUp ); } ghInstance = hInstance; hWndPopUp = CreateWindowEx(WS_EX_CONTEXTHELP, wcPopUp.lpszClassName, L"Stock Ticker Login", WS_OVERLAPPEDWINDOW, 0, 0, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL ); bool show = ShowWindow( hWndPopUp, SW_MAXIMIZE ) ; UpdateWindow(hWndPopUp); hPE = NULL; /** While there is no WM_QUIT message in the Message Queue Fetch Message from the queue and Dispatch it to WindowProc() **/ while( (bRet = GetMessage( &msg, NULL, 0, 0 )) != 0 ) { if (bRet == -1) { // handle the error and possibly exit int nerror = GetLastError(); MessageBox(hWnd,L"Window Error",L"Window error", MB_ICONERROR); exit(1); } else { TranslateMessage( &msg ); DispatchMessage( &msg ); } } return (int)msg.wParam; } LRESULT WINAPI PopUpWndProc( HWND hWnd2, UINT msg, WPARAM wParam, LPARAM lParam ){ HDC hdc; PAINTSTRUCT ps; RECT rc; GetClientRect(hWnd, &rc); int height = rc.bottom - rc.top; int width = rc.right -rc.left; switch( msg ) { case WM_CREATE: hWndStaticUsername = CreateWindowEx( 0 , L"static" , L"Username" , WS_CHILD | WS_VISIBLE , rc.left + width/8 , rc.top + height/4 , 100 , 30 , hWnd2 , 0 , ghInstance , 0 ); hWndEditUsername = CreateWindowEx( WS_EX_CLIENTEDGE , L"edit" , L"" , WS_CHILD | WS_VISIBLE , rc.left + width/8 + 150 , rc.top + height/4 , 150 , 30 , hWnd2 , 0 , ghInstance , 0 ); hWndBtnLogin = CreateWindowEx( 0 , L"button" , L"Login" , WS_CHILD | WS_VISIBLE | BS_PUSHBUTTON , rc.left + width/8 , rc.top + height/4 + 80 , 50 , 30 , hWnd2 , 0 , ghInstance , 0 ); break; case WM_COMMAND: if(HIWORD(wParam)== BN_CLICKED && lParam==(LPARAM)hWndBtnLogin ) { TCHAR* uname =new TCHAR; Edit_GetText(hWndEditUsername, uname, 20); if(wcscmp(uname,L"")==0) return 0; else { StartTicker(uname); DestroyWindow(hWnd); } } break; case WM_DESTROY: hWnd = CreateWindowEx(WS_EX_CONTEXTHELP, L"MainAppClass", L"Assignment 2", WS_OVERLAPPEDWINDOW, 0, 0, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, ghInstance, NULL ); ShowWindow( hWnd, SW_MAXIMIZE ) ; UpdateWindow(hWnd); break; default: return DefWindowProc(hWnd, msg, wParam, lParam ); } return 0; } </code></pre> <p>Please help me find the solution.</p>

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