www.pudn.com > VCYXSJRM.rar > canvasFrame.cpp

// canvasFrame.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "canvasr.h" 
#include "canvasFrame.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// canvasFrame 
 
IMPLEMENT_DYNCREATE(canvasFrame, CFrameWnd) 
 
canvasFrame::canvasFrame() 
{ 
	Create(NULL,"绘图窗口"); 
	CClientDC dc(this); 
	int width = dc.GetDeviceCaps(HORZRES); 
	int height = dc.GetDeviceCaps(VERTRES); 
	GetWindowRect( &rect ); 
	width = ( width - ( rect.right - rect.left ))/2 ; 
	height = (height - (rect.bottom - rect.top ))/2 ; 
	MoveWindow( width , height , (rect.right - rect.left ) , (rect.bottom - rect.top ) ,true); 
	GetClientRect(&rect);  
	mdc = new CDC;        //建立一内存DC mdc 
	bitmap = new CBitmap; //建立源位图 
	bgbmp = new CBitmap;  //建立背景图 
	mdc->CreateCompatibleDC(&dc); //将mdc转换成与dc相容的DC 
	bgbmp->m_hObject = (HBITMAP)::LoadImage(NULL,"bground.bmp",IMAGE_BITMAP,rect.right,rect.bottom,LR_LOADFROMFILE); //载入背景图文件 
	bitmap->m_hObject = (HBITMAP)::LoadImage(NULL,"man.bmp",IMAGE_BITMAP,208,154,LR_LOADFROMFILE); //载入来源位图文件 
} 
 
canvasFrame::~canvasFrame() 
{ 
	delete mdc; 
	delete bitmap;  
	delete bgbmp; 
} 
 
 
BEGIN_MESSAGE_MAP(canvasFrame, CFrameWnd) 
	//{{AFX_MSG_MAP(canvasFrame) 
	ON_WM_PAINT() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// canvasFrame message handlers 
 
void canvasFrame::OnPaint() 
{ 
	CPaintDC dc(this);         //建立响应WM_PAINT消息的DC 
	mdc->SelectObject(bgbmp);  //取得背景图 
	dc.BitBlt(0,0,rect.right,rect.bottom,mdc,0,0,SRCCOPY); //贴上背景图 
	mdc->SelectObject(bitmap); //取得源位图 
	dc.BitBlt(250,150,104,154,mdc,104,0,SRCAND);  
	//将屏蔽与背景图做AND运算 
	dc.BitBlt(250,150,104,154,mdc,0,0,SRCPAINT); 
	//将要透空的图与背景图做OR运算  
}