Windows程序设计 编辑类EDIT
P315
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/*----------------------------------------POPPAD1.C -- Popup Editor using child window edit box(c) Charles Petzold, 1998----------------------------------------*/#include <windows.h>#define ID_EDIT 1LRESULT 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) ;
}