从位图到图标的图像转换似乎不起作用

发布于 2024-08-29 05:00:40 字数 550 浏览 7 评论 0原文

我有一个简单的函数，它接受位图，并将位图转换为 ICON 格式。下面是该函数。（我用文字值代替变量）

    Bitmap tempBmp = new Bitmap(@"C:\temp\mypicture.jpeg");
    Bitmap bmp = new Bitmap(tempBmp, 16, 16);
    bmp.Save("@C:\temp\mypicture2.ico", ImageFormat.Icon)

它似乎没有正确转换......或者我认为是这样。图像转换后，某些浏览器不会将图像重新识别为真正的“ICON”，甚至 Visual Studio 2008 在将图像转换为 Icon 格式后也不会将图像重新识别为图标。

例如，我打算使用刚刚转换的图标为我的 Win32 表单应用程序设置 Icon 属性。我打开对话框并选择刚刚转换的图标并收到以下错误。

--“参数‘图片’必须是可以用作图标的图片。”

我浏览过网络并遇到过复杂的代码，人们花时间手动将位图转换为不同的格式，但我认为上面的代码应该可以工作，并且 .NET 框架会处理这种转换。

原文

I have a simple function that takes a bitmap, and converts the bitmap to an ICON format. Below is the function. (I placed literal values in place of the variables)

    Bitmap tempBmp = new Bitmap(@"C:\temp\mypicture.jpeg");
    Bitmap bmp = new Bitmap(tempBmp, 16, 16);
    bmp.Save("@C:\temp\mypicture2.ico", ImageFormat.Icon)

It doesn't seem to be converting correctly...or so I think. After the image is converted, some browsers do not reconigze the image as a true "ICON" , and even Visual Studio 2008 doesn't reconigze the image as an icon after its converted to an Icon format.

For example, I was going to set the Icon property for my Win32 form app with the Icon i just converted. I open the dialouge box and select the icon I just converted and get the following error.

-- "Argument 'picture' must be a picture that can be used as a Icon."

I've browsed the web and come across complicated code where people take the time to manually convert the bitmap to different formats, but I would think the above code should work, and that the .NET framework would take care of this conversion.

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听，心雨的声音 2024-09-05 05:00:40

我测试了以下代码并且它有效，但结果不是很好。请记住，图标的调色板有限，您可能会丢失一些颜色信息。

    Bitmap b = new Bitmap(@"d:\file.jpg");
    Icon i = Icon.FromHandle(b.GetHicon());
    i.Save(File.Open(@"d:\file.ico", FileMode.OpenOrCreate, FileAccess.Write));

I tested the following code and it worked but the results weren't great. Remember an icon has a limited palette and you'll probably lose some color information.

    Bitmap b = new Bitmap(@"d:\file.jpg");
    Icon i = Icon.FromHandle(b.GetHicon());
    i.Save(File.Open(@"d:\file.ico", FileMode.OpenOrCreate, FileAccess.Write));

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