孙鑫VC_001_创建窗口

孙鑫的教程视频网址是http://www.sunxin.org/

先把孙鑫老师的VC++教程学一遍。算是VC++入门吧。

所有的代码在vs2008下调试通过。

下面是第一课内容：创建一个窗口。

//vs2008
#include <TCHAR.h>//长字符
#include<windows.h>
#include <stdio.h>

LRESULT CALLBACK WinSunProc(
                                                        HWND hwnd,
                                                        UINT uMsg,
                                                        WPARAM wParam,
                                                        LPARAM lParam
                                                        );
//windows程序入口函数

int WINAPI WinMain(
                                     HINSTANCE hInstance,
                                     HINSTANCE hPrevInstance,
                                     LPSTR lpCmdLine,
                                     int nShowCmd
                                     )

{
    WNDCLASS wndcls;   //设计一个窗口类
    wndcls.cbClsExtra=0;
    wndcls.cbWndExtra=0;
    wndcls.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
    wndcls.hCursor=LoadCursor(NULL,IDC_ARROW);
    wndcls.hIcon=LoadIcon(NULL,IDI_WINLOGO);
    wndcls.hInstance=hInstance;
    wndcls.lpfnWndProc=WinSunProc;
    wndcls.lpszClassName=_T("study_01");//注意这里_T("study_01")转换为长字符集。
     wndcls.lpszMenuName=NULL;
    wndcls.style=CS_HREDRAW | CS_VREDRAW;

    RegisterClass(&wndcls);   //注册窗口类

    HWND hwnd;     //创建窗口
    hwnd=CreateWindow(_T("study_01"),_T("Study 01"),WS_OVERLAPPEDWINDOW | WS_HSCROLL  | WS_VSCROLL,CW_USEDEFAULT,CW_USEDEFAULT,600,400,NULL,NULL,hInstance,NULL);

    ShowWindow(hwnd,SW_SHOWNORMAL);  //显示窗口
    UpdateWindow(hwnd);    //更新窗口

    MSG msg;
    //消息循环
    while(GetMessage(&msg,NULL,0,0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }
    return 0;
}//end of WinMain
//消息回调函数

LRESULT CALLBACK WinSunProc(
                                                        HWND hwnd,
                                                        UINT uMsg,
                                                        WPARAM wParam,
                                                        LPARAM lParam
                                                        )
{
    switch(uMsg)
    {
    case WM_CHAR:
        {
            TCHAR szChar[20];
            wsprintf(szChar, _T("char is %d"),wParam);
            MessageBox(hwnd, szChar, _T("tell you"), 0);
            break;
        }
    case WM_LBUTTONDOWN:
        {
            //        MessageBox(hwnd,_T("mouse clicked"),_T("mouse"),0);
            HDC hdc;
            hdc=GetDC(hwnd);
            //
            static int i=50;
            i+=20;
            if(i>=300)i=50;
            TextOut(hdc,10,i,_T("mouse left clicked"),wcslen(_T("mouse left clicked")));//wcslen(_T(
            ReleaseDC(hwnd,hdc);
            break;
        }
    case WM_PAINT:
        {
            HDC hDC;
            PAINTSTRUCT ps;
            hDC=BeginPaint(hwnd,&ps);
            TextOut(hDC,10,10,_T("haha"),wcslen(_T("haha")));
            EndPaint(hwnd,&ps);
            break;
        }
    case WM_CLOSE:
        if(IDYES==MessageBox(hwnd,_T("真的要结束么？"),_T("close"),MB_YESNO))
        {
            DestroyWindow(hwnd);
        }
        break;
    case WM_DESTROY:
        PostQuitMessage(0);
        break;
    default:
        return DefWindowProc(hwnd,uMsg,wParam,lParam);
    }
    return 0;
}//end of WinSunProc

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