MFC用CImage.Draw绘图对话框闪烁问题

[_Sodo_]

这是一个应用程序类，想要在这个类实现绘制图像到窗体，还有这个类派生自CDialog

屏幕不到一秒闪烁一次，本人菜鸟，会的麻烦帮帮忙呵呵，小生在这谢谢了！

void Common::DrawFuncation(char *buf, int size)
{
CClientSystemDlg *pdlg = (CClientSystemDlg *)AfxGetMainWnd();

if(this->m_bDraw == true)
{
this->LockKeyMouse();
this->Show_Wnd();
int nWidth = GetSystemMetrics(SM_CXSCREEN);
int nHeight = GetSystemMetrics(SM_CYSCREEN);
IStream *I= NULL;
CreateStreamOnHGlobal(NULL,true, &I);
ULONG len;
I->Write((void *)buf,size,&len);
CImage image;
image.Load(I);
jpgWidth=image.GetWidth();
jpgHeight=image.GetHeight();

HDC hdcScreen;
hdcScreen = GetDC(pdlg->m_hWnd);
image.Draw(hdcScreen,0,0,nWidth,nHeight,0,0,jpgWidth,jpgHeight);
I->Release();
DeleteDC(hdcScreen);
}
}

[pshchao]

用双缓冲，把所有要画的东西都先绘制到内存DC，然后在把内存DC绘制到屏幕DC（设备DC）

[_Sodo_]

谢谢.不是双缓冲的问题呵呵，我从绘的时候忘了现实窗体了...