VS2012_win32application_WinMain_创建窗口

1.创建项目

创建项目->win32->win32项目（win32application）->填写命名和存放位置->下一步->选择“空项目”->完成

2.创建.cpp

在解决方案资源管理器的源文件右键->添加新建项->c++文件（.cpp）->填写名称->添加

3.配置

项目->属性->配置属性->常规->字符集:使用多字节字符集->确定

3.程序

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

LRESULT CALLBACK WinSunProc(
HWND hwnd,      // handle to window
UINT uMsg,      // message identifier
WPARAM wParam,  // first message parameter
LPARAM lParam   // second message parameter
);

int WINAPI WinMain(
HINSTANCE hInstance,      // handle to current instance
HINSTANCE hPrevInstance,  // handle to previous instance
LPSTR lpCmdLine,          // command line
int nCmdShow              // show state
)
{
WNDCLASS wndcls;
wndcls.cbClsExtra=0;
wndcls.cbWndExtra=0;
wndcls.hbrBackground=(HBRUSH)GetStockObject(LTGRAY_BRUSH);
wndcls.hCursor=LoadCursor(NULL,IDC_IBEAM);
wndcls.hIcon=LoadIcon(NULL,IDI_ERROR);
wndcls.hInstance=hInstance;
wndcls.lpfnWndProc=WinSunProc;
wndcls.lpszClassName="WinMainvs2012";
wndcls.lpszMenuName=NULL;

wndcls.style=CS_HREDRAW | CS_VREDRAW;

RegisterClass(&wndcls);

HWND hwnd;
hwnd=CreateWindow("WinMainvs2012","Hello!",WS_OVERLAPPEDWINDOW,
0,0,600,400,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,      // handle to window
UINT uMsg,      // message identifier
WPARAM wParam,  // first message parameter
LPARAM lParam   // second message parameter
)
{
switch(uMsg)
{
case WM_CHAR:
char szChar[20];
sprintf(szChar,"char is %d",wParam);
MessageBox(hwnd,szChar,"WinMain",0);
break;
case WM_LBUTTONDOWN:
MessageBox(hwnd,"mouse clicked","WinMain",0);
HDC hdc;
hdc=GetDC(hwnd);
TextOut(hdc,0,50,"计算机",strlen("计算机"));
ReleaseDC(hwnd,hdc);
break;
case WM_PAINT:
HDC hDC;
PAINTSTRUCT ps;
hDC=BeginPaint(hwnd,&ps);
TextOut(hDC,0,0,"vs2012",strlen("vs2012"));
EndPaint(hwnd,&ps);
break;
case WM_CLOSE:
if(IDYES==MessageBox(hwnd,"是否真的结束？","WinMain",MB_YESNO))
{
DestroyWindow(hwnd);
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,uMsg,wParam,lParam);
}
return 0;
}

5.详解