高分救急！！！

[czar]

如何实现图形的点击放大缩小？就象ACDSEE里面那样，前提是在VC中实现，而且要适用于多种格式的文件

[masterz]

void CMyWnd::OnPaint()
{
CPaintDC dc(this);

Graphics graphics(&dc); // Create a GDI+ graphics object

Image image(L"Test.Gif"); // Construct an image

graphics.DrawImage(&image, 0, 0, image.GetWidth(), image.GetHeight());

}

Graphics::DrawImage(Image* image, Rect& destRect, INT srcx, INT srcy, INT srcwidth, INT srcheight, Unit srcUnit, ImageAttributes* imageAttributes, DrawImageAbort callback, VOID* callbackData)