Question

一段winmain函数，窗口注册部分一直不好用

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
MSG msg;
WNDCLASS winclass;
winclass.style = CS_HREDRAW|CS_VREDRAW;
winclass.cbClsExtra = 0;
winclass.cbWndExtra = 0;
winclass.hbrBackground = (HBRUSH) GetStockObject(DKGRAY_BRUSH);
winclass.hIcon = LoadIcon(hInstance,IDI_QUESTION);
winclass.hCursor = LoadCursor(hInstance,IDC_CROSS);
winclass.hInstance = hInstance;
winclass.lpfnWndProc = (WNDPROC)WndProc;
winclass.lpszMenuName = NULL;
winclass.lpszClassName = "name";
RegisterClass(&winclass);

HWND hWnd;
hWnd=CreateWindow("name","Test",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
ShowWindow(hWnd,SW_MAXIMIZE);
UpdateWindow(hWnd);

while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 0;

Answer 1

我试了一下可以正常用呀.
#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
HDC thdc;
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_DBLCLKS;//CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (hInstance, IDI_APPLICATION) ;
wndclass.hCursor = LoadCursor (hInstance, 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 ("The Hello 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)
{
HDC hdc ;
PAINTSTRUCT ps ;
switch (message)
{
case WM_CREATE:
//PlaySound (TEXT ("hellowin.wav"), NULL, SND_FILENAME | SND_ASYNC) ;
return 0 ;
case WM_PAINT:
hdc = BeginPaint (hwnd, &ps) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_DESTROY:
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

Answer 2

winclass.lpszMenuName = NULL;
winclass.lpszClassName = TEXT("name");

如果不行把第一行的NULL也改成TEXT("")这个样子的.
随便起个名字就行了

CreateWindow中前两个参数也这样改：
TEXT("name"),TEXT("Text")