VC++学习笔记(1)-白红宇

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);

return 0;

}

case WM_DESTROY:

{

PostQuitMessage(0);

return 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

{

public:

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