我的意思是创建一个没有标题,没有菜单,空白得像一张白纸的窗口。我记得在VB里只要简单地设置一下窗口Border的属性就可以了。我对照MSDN写了这样一段代码:
HWND hMainWnd; // 主窗口
WNDCLASSEX wcex;wcex.style = 0;
wcex.lpfnWndProc = (WNDPROC)WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = NULL;
wcex.hCursor = NULL;
wcex.hbrBackground = (HBRUSH)(COLOR_BACKGROUND);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = "";
wcex.hIconSm = NULL;RegisterClassEx(&wcex);hMainWnd = CreateWindow( "", "", 0, 0, 0, 100, 100, NULL, NULL, hInstance, NULL );if ( hMainWnd == NULL )
{
MessageBox( NULL, "CreateWindow() failed!", "DXTEST02", MB_ICONERROR|MB_OK );
return -1;
}
但是代码不工作,每次都告诉我“CreateWindow() failed!”。
HWND hMainWnd; // 主窗口
WNDCLASSEX wcex;wcex.style = 0;
wcex.lpfnWndProc = (WNDPROC)WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = NULL;
wcex.hCursor = NULL;
wcex.hbrBackground = (HBRUSH)(COLOR_BACKGROUND);
wcex.lpszMenuName = NULL;
wcex.lpszClassName = "";
wcex.hIconSm = NULL;RegisterClassEx(&wcex);hMainWnd = CreateWindow( "", "", 0, 0, 0, 100, 100, NULL, NULL, hInstance, NULL );if ( hMainWnd == NULL )
{
MessageBox( NULL, "CreateWindow() failed!", "DXTEST02", MB_ICONERROR|MB_OK );
return -1;
}
但是代码不工作,每次都告诉我“CreateWindow() failed!”。
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PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("BlankWindow") ;
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, // window class name
TEXT ("A Blank Window Program"), // window caption
WS_OVERLAPPEDWINDOW, // window style
CW_USEDEFAULT, // initial x position
CW_USEDEFAULT, // initial y position
CW_USEDEFAULT, // initial x size
CW_USEDEFAULT, // initial y size
NULL, // parent window handle
NULL, // window menu handle
hInstance, // program instance handle
NULL) ; // creation parameters
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)
{
switch (message)
{
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}
而且还必须是一个已经注册成功的类的类名用VC的APPWIZARD创建一个HELLO,WORLD工程,学习一下就明白了:)
WS_POPUP
Creates a pop-up window. This style cannot be used with the WS_CHILD style. 什么叫pop-up window啊?