我想通过32x32、16x16位图程序化创建一个单一的System.Drawing.Icon。这可行吗?如果我使用-加载一个图标
Icon myIcon = new Icon(@"C:\myIcon.ico");
...它可以包含多张图片。
这里有一个不错的代码片段。它使用了Icon.FromHandle
方法。
来自链接:
/// <summary>
/// Converts an image into an icon.
/// </summary>
/// <param name="img">The image that shall become an icon</param>
/// <param name="size">The width and height of the icon. Standard
/// sizes are 16x16, 32x32, 48x48, 64x64.</param>
/// <param name="keepAspectRatio">Whether the image should be squashed into a
/// square or whether whitespace should be put around it.</param>
/// <returns>An icon!!</returns>
private Icon MakeIcon(Image img, int size, bool keepAspectRatio) {
Bitmap square = new Bitmap(size, size); // create new bitmap
Graphics g = Graphics.FromImage(square); // allow drawing to it
int x, y, w, h; // dimensions for new image
if(!keepAspectRatio || img.Height == img.Width) {
// just fill the square
x = y = 0; // set x and y to 0
w = h = size; // set width and height to size
} else {
// work out the aspect ratio
float r = (float)img.Width / (float)img.Height;
// set dimensions accordingly to fit inside size^2 square
if(r > 1) { // w is bigger, so divide h by r
w = size;
h = (int)((float)size / r);
x = 0; y = (size - h) / 2; // center the image
} else { // h is bigger, so multiply w by r
w = (int)((float)size * r);
h = size;
y = 0; x = (size - w) / 2; // center the image
}
}
// make the image shrink nicely by using HighQualityBicubic mode
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
g.DrawImage(img, x, y, w, h); // draw image with specified dimensions
g.Flush(); // make sure all drawing operations complete before we get the icon
// following line would work directly on any image, but then
// it wouldn't look as nice.
return Icon.FromHandle(square.GetHicon());
}
System.Diagnostics.Process.Start
调用它。在调用 png2ico 之前,您需要创建并将图像保存到磁盘上。
Icon
类加载到内存中,当你从另一个Icon
对象调整大小时,图像数据会被共享,并从原始(共享的)数据中拉取最接近的尺寸。 - NetMage