停靠布局、背景图片、无边框窗体;运行区按比例缩小、可放大
- Dock:和 WinForms 一样按 Controls 倒序依次停靠,扣掉 Panel 边框、GroupBox 标题占的地方; 改大小、显示隐藏、加入移出控件时重新布局;SuspendLayout / ResumeLayout / PerformLayout - 设计器里每次修改后按同样的规则排好停靠的控件(designer/layout.ts);属性窗口加"停靠" - BackgroundImage + BackgroundImageLayout(平铺、居中、拉伸、缩放):窗体、面板、图片框, 设计器里从项目资源选;无边框窗体没有标题栏,大小不含边框 - 背景色沿用父控件:没设背景色的标签、面板、分组框等画父控件的背景色(不是背景图片), 和 WinForms 一样;分组框标题处边框断开、透出背景;文本框的 BackColor 生效 - 图片框可以放子控件,把鼠标按下、松开发给程序 - 运行区:窗体比运行区大时整体按比例缩小并显示比例;"放大"占满整个网页(窗体在左、实训台在右),Esc 还原 - Paint 事件:VS 双击面板生成的空 panel1_Paint 能编译(平台由浏览器绘制,不触发) Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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@@ -41,3 +41,20 @@ public class FormClosedEventArgs : EventArgs
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}
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public delegate void FormClosedEventHandler(object? sender, FormClosedEventArgs e);
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/// <summary>重绘事件的参数。平台由浏览器绘制控件,不支持在 Graphics 上自己画</summary>
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public class PaintEventArgs : EventArgs, IDisposable
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{
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public PaintEventArgs(System.Drawing.Graphics graphics, System.Drawing.Rectangle clipRect)
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{
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Graphics = graphics;
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ClipRectangle = clipRect;
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}
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public System.Drawing.Graphics Graphics { get; }
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public System.Drawing.Rectangle ClipRectangle { get; }
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public void Dispose() => GC.SuppressFinalize(this);
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}
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public delegate void PaintEventHandler(object? sender, PaintEventArgs e);
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