如何创建一个有边框但没有标题栏的表单?(如 Windows 7 上的音量控制) [英] How to create a form with a border, but no title bar? (like volume control on Windows 7)

问题描述

在 Windows 7 中，音量混合器窗口具有特定的样式，具有厚实、透明的边框，但没有标题栏.如何在 winforms 窗口中重新创建该窗口样式?

In Windows 7, the volume mixer windows has a specific style, with a thick, transparent border, but no title bar. How do i recreate that window style in a winforms window?

我尝试将 Text 设置为 string.Empty，将 ControlBox 设置为 false，这会删除标题栏，但随后边框也会消失:

I tried setting Text to string.Empty, and ControlBox to false, which removes the titlebar, but then the border also disappears:

推荐答案

form.Text = string.Empty;
form.ControlBox = false;
form.FormBorderStyle = FormBorderStyle.SizableToolWindow;

对于固定大小的窗口，您仍应使用 FormBorderStyle.SizableToolWindow，但您可以覆盖表单的 WndProc 以忽略非客户端命中测试(用于切换到尺寸光标):

For a fixed size window, you should still use FormBorderStyle.SizableToolWindow, but you can override the form's WndProc to ignore non-client hit tests (which are used to switch to the sizing cursors):

protected override void WndProc(ref Message message)
{
    const int WM_NCHITTEST = 0x0084;

    if (message.Msg == WM_NCHITTEST)
        return;

    base.WndProc(ref message);
}

如果您想真正强制执行大小，您还可以在表单上设置 MinimumSize 等于 MaximumSize.

If you want to really enforce the size, you could also set MinimumSize equal to MaximumSize on the form.

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