求助 照着书本第三章敲的那个HELLOWIN程序运行不了
照着书本第三章敲的那个HELLOWIN程序运行不了我用的是vs2019
wndclass.lpfnWndProc =WndProc提示未定义标识符"WndProc"
ShowWindow(hwnd,iCmdShow)提示未定义标识符"iCmdShow" 上面那两个已经解决了，但是到下面那里又有几个未定义标识符，已经按书上的全部敲了下来 #include <windows.h>
LRESULT CALLBACK WndPROC(HWND, UINT, WPARAM, LPARAM);
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT("HelloWin");
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,
TEXT("The Hello Program!"),
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)
{
HDC hdc;
PAINTSTRUCT ps;
RECT rect;
switch (message)
{
case WM_CREATE:
PlaySound(TEXT("hellowin.wav"),NULL,SND_FILENAME|SND_ASYNC);
return 0;
case MWM_PAINT:
hdc = BeginPaint(hwnd, &ps);
GetClientRect(hwnd,&rect);
DrawText(hdc,TEXT("hello,windows!"),-1,&rect,
DT_SINGLELINE|DT_CENTER|DT_VCENTER);
EndPaint (hwnd,&ps);
return 0;
case MWM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd,message,wParam,lParam);
}
switch 里的 MWM_PAINT 和 MWM_DESTROY 未定义标识符
已经解决 请问是如何解决的？ 吴辉革 发表于 2019-9-3 09:55
请问是如何解决的？
这个是因为书上有错误WM_PAINT WM_DESTROY
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