C++ 可视化窗口程序

第一次写出了个C++的可视化窗口，纪念一下，虽然是跟着孙鑫C++的教程视频做的，但好歹也算是熟悉了变成和运行的原理，这份教程还是真不错，就是年代有点久远了，应该是03年的吧

*注意：刚开始编译的时候显示GetStockObject()和TextOut()两个函数没有定义，调整一下codeblocks设置就行了，别的编译环境也一样，菜单栏Project ->Properties->Project settings 右下角->Project's build options->Linker settings->在Other linker options框格里面粘贴上-mwindows就行了

附上自己的代码

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

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,"Weixin",0);
break;
case WM_LBUTTONDOWN:
MessageBox(hwnd,"mouse clicked","weixin",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,"微信",strlen("微信"));
EndPaint(hwnd,&ps);
break;
case WM_CLOSE:
if(IDYES==MessageBox(hwnd,"是否真的结束？","weixin",MB_YESNO)){
DestroyWindow(hwnd);
}
break;
case WM_DESTROY:
PostQuitMessage((0));
break;
default:
return DefWindowProc(hwnd,uMsg,wParam,lParam);
}
return 0;
}
int WINAPI WinMain(
HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR LpCmdLine,
int nCmdShow
){
WNDCLASS wndcls;
wndcls.cbClsExtra=0;
wndcls.cbWndExtra=0;
wndcls.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);
wndcls.hCursor=LoadCursor(NULL,IDC_CROSS);
wndcls.hIcon=LoadIcon(NULL,IDI_ERROR);
wndcls.hInstance=hInstance;
wndcls.lpfnWndProc=WinSunProc;
wndcls.lpszClassName="Weixin2003";
wndcls.lpszMenuName=NULL;
wndcls.style=CS_HREDRAW|CS_VREDRAW;
RegisterClass(&wndcls);

HWND hwnd;
hwnd=CreateWindow("Weixin2003","北京微信科学技术中心",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;
}