c# - 我怎样才能使 WinForms TabPage 标题宽度适合它的标题？

Question

我怎样才能使 WinForms TabPage 标题宽度适合它的标题？这是问题所在。

Answer 1

本机 Windows 选项卡控件允许覆盖默认的最小选项卡宽度。遗憾的是，该功能并未在 TabControl 包装类中公开。不过这是可以解决的。向您的项目添加一个新类并粘贴如下所示的代码。编译。将新控件从工具箱顶部拖放到表单上。

using System;
using System.Windows.Forms;

class MyTabControl : TabControl {
    protected override void OnHandleCreated(EventArgs e) {
        base.OnHandleCreated(e);
        // Send TCM_SETMINTABWIDTH
        SendMessage(this.Handle, 0x1300 + 49, IntPtr.Zero, (IntPtr)10);
    }
    [System.Runtime.InteropServices.DllImport("user32.dll")]
    private static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wp, IntPtr lp);
}

Answer 2

谢谢，汉斯。我在没有创建类的情况下使用了您的代码

//InitializeComponent
this.tabPresentations.HandleCreated += new System.EventHandler(TabControl_HandleCreated);

void TabControl_HandleCreated(object sender, System.EventArgs e)
{
     // Send TCM_SETMINTABWIDTH
     SendMessage((sender as TabControl).Handle, 0x1300 + 49, IntPtr.Zero, (IntPtr)4);
}
[System.Runtime.InteropServices.DllImport("user32.dll")]
private static extern IntPtr SendMessage(IntPtr hWnd, int msg, IntPtr wp, IntPtr lp);

Answer 3

您需要测量字体。

尝试这样的事情：

Dim tabPage As New TabPage
Dim width As Integer = 0
Dim valueToMeasure As String = <Your title Here>
Dim g As Graphics = tabPage.CreateGraphics()

width = CType(g.MeasureString(valueToMeasure, tabPage.Font).Width, Integer)

可能会为填充添加一个额外的机器人（宽度=宽度+10）

编辑：

<tab>.width = GetTabWidth(<Title>)

Private Function GetTabWidth (Byval title as String) as Integer

     Dim widthValue as Integer = 10    'Padding (Optional)

     Dim tabPage as New tabPage
     Dim g as Graphics = tabPage.CreateGraphics()

     widthValue += Ctype(g.measureString(title, tabPage.Font).Width, Integer)

     Return widthValue

End Function