学习MFC第二天——第一个Windows程序

在vs2010中建立一个win32空项目并在源文件里建立一个空的c++源文件

然后自己写了一个Windows程序

#include <windows.h>
#include <stdio.h>

LRESULT CALLBACK WinSunProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
);

int WINAPI WinMain(
HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow
)
{
WNDCLASS wndcls;
wndcls.cbClsExtra = 0;
wndcls.cbWndExtra = 0;
wndcls.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
wndcls.hCursor = LoadCursor(NULL,IDC_CROSS);
wndcls.hIcon = LoadIcon(NULL,IDI_APPLICATION);
wndcls.hInstance = hInstance;
wndcls.lpfnWndProc = WinSunProc;
wndcls.lpszClassName = "birdlove1987";
wndcls.lpszMenuName = NULL;
wndcls.style = CS_HREDRAW | CS_VREDRAW;
RegisterClass(&wndcls);

HWND hwnd;
hwnd = CreateWindow(
"birdlove1987",
"学习MFC",
WS_OVERLAPPEDWINDOW,
0,
0,
800,
600,
NULL,
NULL,
hInstance,
NULL
);

ShowWindow(hwnd,SW_SHOWNORMAL);
UpdateWindow(hwnd);

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

return 0;
}

LRESULT CALLBACK WinSunProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
)
{
switch(uMsg)
{
case WM_CHAR:
char szChar[20];
sprintf(szChar,"char is %d",wParam);
MessageBox(hwnd,szChar,"birdlove1987",0);
break;
case WM_LBUTTONDOWN:
MessageBox(hwnd,"mouse clicked","birdlove1987",0);
HDC hdc01;
hdc01 = GetDC(hwnd);
TextOut(hdc01,0,50,"学习MFC",strlen("学习MFC"));
ReleaseDC(hwnd,hdc01);
break;
case WM_PAINT:
HDC hdc02;
PAINTSTRUCT ps;
hdc02 = BeginPaint(hwnd,&ps);
TextOut(hdc02,0,0,"学习MFC",strlen("学习MFC"));
EndPaint(hwnd,&ps);
break;
case WM_CLOSE:
if(IDYES == MessageBox(hwnd,"是否关闭程序？","birdlove1987",MB_YESNO))
{
DestroyWindow(hwnd);
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,uMsg,wParam,lParam);
}
return 0;
}