Windows 表格。在面板边框上绘制控件
Windows forms. Draw a control over panel border
我已经搜索了很长时间，但似乎找不到我需要的东西。我有一个自定义按钮（单击按钮以在按钮下方显示树视图），一切正常，但是如果我将按钮放在面板中（面板是自定义按钮的父级，按钮是treeview) 然后我点击按钮，面板边框切断了 treeview 控件。
我知道我可以更改控件的父级，它会解决问题。但是，我希望控件像普通组合框一样工作，下拉菜单将在面板的边框上呈现（绘制、显示）。
这就是我需要发生的事情
这就是我的树视图发生的情况
I understand I can change the parent of the control and it will fix the problem. However
实际上它也不会修复它。表格还是会剪掉超出的区域。
I would like the control to act like a normal combobox
即使是正常的 ComboBox creates a new native window for the drop-down elements that is not parented into owner's parent control. This is somewhat similar to ToolTip and [context]menu windows. And also note that the drop-down window is not actually anchored to the owner control, meaning, it cannot be dragged with the 'parent' form: it is destroyed 一旦失去焦点，例如。当您单击表单的标题栏时。
我已经搜索了很长时间，但似乎找不到我需要的东西。我有一个自定义按钮（单击按钮以在按钮下方显示树视图），一切正常，但是如果我将按钮放在面板中（面板是自定义按钮的父级，按钮是treeview) 然后我点击按钮，面板边框切断了 treeview 控件。
我知道我可以更改控件的父级，它会解决问题。但是，我希望控件像普通组合框一样工作，下拉菜单将在面板的边框上呈现（绘制、显示）。
这就是我需要发生的事情
这就是我的树视图发生的情况
I understand I can change the parent of the control and it will fix the problem. However
实际上它也不会修复它。表格还是会剪掉超出的区域。
I would like the control to act like a normal combobox
即使是正常的 ComboBox creates a new native window for the drop-down elements that is not parented into owner's parent control. This is somewhat similar to ToolTip and [context]menu windows. And also note that the drop-down window is not actually anchored to the owner control, meaning, it cannot be dragged with the 'parent' form: it is destroyed 一旦失去焦点，例如。当您单击表单的标题栏时。