#include <windows.h>
LRESULT CALLBACK WndProc(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam);
int WINAPI WinMain( HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nCmdShow)
{
MSG msg;
WNDCLASS wc;
HWND hWnd;
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = (WNDPROC) WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_WINLOGO);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
wc.lpszMenuName = NULL;
wc.lpszClassName = "Demo";
if (!RegisterClass(&wc))
{
MessageBox(NULL,"Failed To Register The Window Class.","ERROR",MB_OK|MB_ICONEXCLAMATION);
return FALSE;
}
hWnd=CreateWindow(
"Demo",
"Demo1",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
CW_USEDEFAULT,
NULL,
NULL,
hInstance,
NULL
);
ShowWindow(hWnd,nCmdShow);
UpdateWindow(hWnd);
//这里为什么改成GetMessage(&msg,hWnd,0,0)程序就关不了了？ while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return (msg.wParam);
}
LRESULT CALLBACK WndProc(HWND hWnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
{
switch (uMsg)
{
case WM_CLOSE:
PostQuitMessage(0);
return 0;
default:
break;
}
return DefWindowProc(hWnd,uMsg,wParam,lParam);
}
如果将GetMessage中的第2个NULL参数改成和hWnd程序就关不了了，我查过MSDN上边讲当第2个参数是NULL时，表示为属于该程序的消息队列的所有窗口检索信息。但问题是，我这个程序里就只有一个窗口，用该窗口的句柄作为参数应该也可以吧。
望高手指点一二。
