如何将 System.Drawing.Icon 绘制到 SplitterPanel 上？

发布于 2024-10-05 23:12:16 字数 542 浏览 6 评论 0原文

我有这样的东西：

var systemIcon = SystemIcons.Information;
verticalSplitPanel.SplitterDistance = systemIcon.Width;

var g = verticalSplitPanel.Panel1.CreateGraphics();
g.DrawIcon(systemIcon, 0, 0);

它编译并运行没有错误，但由于某种原因图标不可见。

我也尝试过这个：

var systemIcon = SystemIcons.Information;
verticalSplitPanel.SplitterDistance = systemIcon.Width;

var g = verticalSplitPanel.Panel1.CreateGraphics();
g.DrawImage(systemIcon.ToBitmap(), 0, 0);

它再次编译并运行，没有错误，但不显示图标。

我怎样才能显示这个图标？

原文

I've got something like this:

var systemIcon = SystemIcons.Information;
verticalSplitPanel.SplitterDistance = systemIcon.Width;

var g = verticalSplitPanel.Panel1.CreateGraphics();
g.DrawIcon(systemIcon, 0, 0);

This compiles and runs without error, but for some reason the icon isn't visible.

I also tried this:

var systemIcon = SystemIcons.Information;
verticalSplitPanel.SplitterDistance = systemIcon.Width;

var g = verticalSplitPanel.Panel1.CreateGraphics();
g.DrawImage(systemIcon.ToBitmap(), 0, 0);

Again it compiles and runs without error, but doesn't show the icon.

How can I display this icon?

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心如狂蝶 2024-10-12 23:12:16

您的代码可以在面板的表面上绘制图标，但只要面板决定重新绘制自身，该图标就会被清除。您不应使用 verticalSplitPanel.Panel1.CreateGraphics() 调用中的 Graphics 对象，而是应处理面板的 Paint 事件并使用 Graphics > 该事件参数中提供的对象。

试试这个：

verticalSplitPanel.Panel1.Paint += (s, eargs) =>
    {
        var icon = SystemIcons.Information;
        eargs.Graphics.DrawIcon(icon, 0, 0);
    };

Your code can paint icon over panel's surface, but it will be cleared whenever panel decides to repaint itself. Instead of using Graphics object from verticalSplitPanel.Panel1.CreateGraphics() call you should handle panel's Paint event and use Graphics object provided in that event args.

Try this:

verticalSplitPanel.Panel1.Paint += (s, eargs) =>
    {
        var icon = SystemIcons.Information;
        eargs.Graphics.DrawIcon(icon, 0, 0);
    };

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