VC++学习笔记(1)

今天开始学习VC++,照着书上写了几个Win32的程序。

1，#include <windows.h>

LRESULT CALLBACK WndProc(HWND hwnd, UINT iMsg, WPARAM wParam,LPARAM lParam)

{

    HDC hdc;//设备环境句柄

    PAINTSTRUCT ps;

    RECT rect;

    POINT point;

    switch(iMsg)

    {

    case WM_PAINT:

        {

            hdc = BeginPaint(hwnd,&ps);

            GetClientRect(hwnd,&rect);

            DrawText(hdc,"Hello,VC6.0!",-1,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER);

            EndPaint(hwnd,&ps);

            return 0;

        }

    case WM_LBUTTONDOWN:

            hdc = GetDC(hwnd);

            point.x = LOWORD(lParam);

            point.y = HIWORD(lParam);

            Ellipse(hdc,point.x-50,point.y-50,point.x+50,point.y+50);

            ReleaseDC(hwnd,hdc);

    case WM_DESTROY:

            PostQuitMessage(0);

    }

        return DefWindowProc(hwnd,iMsg,wParam,lParam);

}

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

    static char szAppName[] = "HelloWin32";//应用程序名

    HWND hwnd;//窗口句柄

    MSG    msg;//消息

    WNDCLASSEX wndclass;//窗口类

    wndclass.cbSize = sizeof(wndclass);//窗口类结构的大小

    wndclass.style = CS_HREDRAW|CS_VREDRAW;//类风格：水平和垂直方向重画

    wndclass.lpfnWndProc = WndProc;//窗口过程

    wndclass.cbClsExtra = 0;

    wndclass.cbWndExtra = 0;

    wndclass.hInstance = hInstance;

    wndclass.hIcon = LoadIcon(NULL,IDI_APPLICATION);

    wndclass.hCursor = LoadCursor(NULL,IDC_ARROW);

    wndclass.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);

    wndclass.lpszClassName = szAppName;

    wndclass.lpszMenuName = NULL;

    wndclass.hIconSm = LoadIcon(NULL,IDI_APPLICATION);

    RegisterClassEx(&wndclass);

    hwnd=CreateWindow(szAppName,

                      "The Hello App",

                      WS_OVERLAPPEDWINDOW,

                      CW_USEDEFAULT,

                      NULL,

                      hInstance,

                      NULL);

    ShowWindow(hwnd,nShowCmd);

    UpdateWindow(hwnd);

    while(GetMessage(&msg,NULL,0,0))

        TranslateMessage(&msg);

        DispatchMessage(&msg);

    return msg.wParam;

2，//t1.h

class CMyApp:public CWinApp

public:

    virtual BOOL InitInstance();

};

class CMainWindow:public CFrameWnd

    CMainWindow();

protected:

    afx_msg void OnPaint();

    afx_msg void OnLButtonDown(UINT nFlags,CPoint point);

    DECLARE_MESSAGE_MAP()

//t1.cpp

#include <afxwin.h>

#include "t1.h"

CMyApp myApp;

BOOL CMyApp::InitInstance()

    this->m_pMainWnd = new CMainWindow;

    this->m_pMainWnd->ShowWindow(this->m_nCmdShow);

    this->m_pMainWnd->UpdateWindow();

    return TRUE;

BEGIN_MESSAGE_MAP(CMainWindow,CFrameWnd)

    ON_WM_PAINT()

    ON_WM_LBUTTONDOWN()

END_MESSAGE_MAP()

CMainWindow::CMainWindow()

    Create(NULL,_T("The MFC Application"));

void CMainWindow::OnPaint()

    CPaintDC dc(this);

    CRect rect;

    GetClientRect(&rect);

    dc.DrawText("Weclome to VC!!",-1,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER);

void CMainWindow::OnLButtonDown(UINT nFlags,CPoint point)

    CClientDC dc(this);

    CRect rect(point.x-50,point.y-50,point.x+50,point.y+50);

    dc.Ellipse(rect);

本文转自Phinecos(洞庭散人)博客园博客，原文链接：http://www.cnblogs.com/phinecos/archive/2007/03/30/694562.html，如需转载请自行联系原作者