gdi+图像裁剪

一、实现图像裁剪

CImage image1;//不知道为什么，没有这两句不能正常显示，哪位大神知道告诉我一下
image1.Load(L"");//不知道为什么，没有这两句不能正常显示，哪位大神知道告诉我一下
CDC* pDC = GetDC();
Graphics graph(pDC->GetSafeHdc());
Bitmap *image = new Bitmap(_T("d://2.jpg"));
graph.DrawImage(image, 0, 0);
Image* pScaledImage = FixedSize(image, 200, 200);
graph.DrawImage(pScaledImage, 600, 0);

二、FixedSize函数的实现

Image* FixedSize(Image *imgSrc, int Width, int Height)
{
	int w, h;
	w = imgSrc->GetWidth();
	h = imgSrc->GetHeight();
	if (w < h) //图片是竖着的 交换Width和Height
	{
		Width = Width + Height;
		Height = Width - Height;
		Width = Width - Height;
	}
	Bitmap *bmPhoto = new Bitmap(Width, Height);
	bmPhoto->SetResolution(imgSrc->GetHorizontalResolution(), imgSrc->GetVerticalResolution());
	Graphics grPhoto(bmPhoto);
	grPhoto.Clear((ARGB)Color::White);
	grPhoto.SetInterpolationMode(InterpolationModeHighQualityBicubic);
	grPhoto.DrawImage(imgSrc, 0, 0, 100,0, Width,Height, UnitPixel);//关键代码，实现裁剪
	return bmPhoto;
}

三、运行结果