Windows程序设计 PopPad1（源代码）.rar

/*------------------------------------------------------- POPPAD1.C -- Popup Editor using child window edit box (c) Charles Petzold, 1998 -------------------------------------------------------*/ #include <windows.h> #define ID_EDIT 1 LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM); TCHAR szAppName[] = TEXT ("PopPad1") ; int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { HWND hwnd ; MSG msg ; WNDCLASS wndclass ; wndclass.style = CS_HREDRAW | CS_VREDRAW ; wndclass.lpfnWndProc = WndProc ; wndclass.cbClsExtra = 0 ; wndclass.cbWndExtra = 0 ; wndclass.hInstance = hInstance ; wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ; wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ; wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ; wndclass.lpszMenuName = NULL ; wndclass.lpszClassName = szAppName ; if (!RegisterClass (&wndclass)) { MessageBox (NULL, TEXT ("This program requires Windows NT!"), szAppName, MB_ICONERROR) ; return 0 ; } hwnd = CreateWindow (szAppName, szAppName, WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL) ; ShowWindow (hwnd, iCmdShow) ; UpdateWindow (hwnd) ; while (GetMessage (&msg, NULL, 0, 0)) { TranslateMessage (&msg) ; DispatchMessage (&msg) ; } return msg.wParam ; } LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { static HWND hwndEdit ; switch (message) { case WM_CREATE : hwndEdit = CreateWindow (TEXT ("edit"), NULL, WS_CHILD | WS_VISIBLE | WS_HSCROLL | WS_VSCROLL | WS_BORDER | ES_LEFT | ES_MULTILINE | ES_AUTOHSCROLL | ES_AUTOVSCROLL, 0, 0, 0, 0, hwnd, (HMENU) ID_EDIT, ((LPCREATESTRUCT) lParam) -> hInstance, NULL) ; return 0 ; case WM_SETFOCUS : SetFocus (hwndEdit) ; return 0 ; case WM_SIZE : MoveWindow (hwndEdit, 0, 0, LOWORD (lParam), HIWORD (lParam), TRUE) ; return 0 ; case WM_COMMAND : if (LOWORD (wParam) == ID_EDIT) if (HIWORD (wParam) == EN_ERRSPACE || HIWORD (wParam) == EN_MAXTEXT) MessageBox (hwnd, TEXT ("Edit control out of space."), szAppName, MB_OK | MB_ICONSTOP) ; return 0 ; case WM_DESTROY : PostQuitMessage (0) ; return 0 ; } return DefWindowProc (hwnd, message, wParam, lParam) ; }