C＃Winforms Panel具有与TabControl相同的样式（阴影）？

本文介绍了C＃Winforms Panel具有与TabControl相同的样式（阴影）？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我想要一个面板有某种阴影像 TabControl 有，这是可能吗？

I want a panel to have some sort of dropshadow like the TabControl has, is this possible?

推荐答案

BorderStyle = Fixed3D

BorderStyle = Fixed3D

查看此示例中的阴影：

www.onteorasoftware/downloads/panelwithshadow.zip

最后，自定义面板可能类似于（在VB中）：

Finally, the custom panel could be like (in VB):

Imports System.Drawing.Drawing2D Public Class ShadowPanel Inherits Panel Declare Function GetWindowDC Lib "user32" Alias "GetWindowDC" (ByVal hwnd As IntPtr) _ As IntPtr Declare Function ReleaseDC Lib "user32" Alias "ReleaseDC" (ByVal hwnd As IntPtr, _ ByVal hdc As IntPtr) As Integer Public Sub New() Me.BorderStyle = BorderStyle.Fixed3D End Sub Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) Const WM_NCPAINT As Integer = &H85 If m.Msg = WM_NCPAINT Then Dim hdc As IntPtr = GetWindowDC(m.HWnd) Dim g As Graphics = Graphics.FromHdc(hdc) Dim rDraw As Rectangle = New Rectangle(0, 0, Me.Width - 1, Me.Height - 1) Dim pBottom As Pen = New Pen(Color.Gray, 3) Dim pTop As Pen = New Pen(Color.White, 3) g.DrawRectangle(pBottom, rDraw) Dim pts(2) As Point pts(0) = New Point(0, Me.Height - 1) pts(1) = New Point(0, 0) pts(2) = New Point(Me.Width - 1, 0) g.DrawLines(pTop, pts) ReleaseDC(Me.Handle, hdc) Else MyBase.WndProc(m) End If End Sub Private Sub ParentPaint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint Dim g As Graphics = Me.Parent.CreateGraphics 'this matrix zooms the text out to 1/4 size and offsets it by a little right and down Dim mx As New Matrix(1.0F, 0, 0, 1.0F, 4, 4) Dim rdraw As New Rectangle(Me.Left, Me.Top, Me.Width, Me.Height) g.Transform = mx g.FillRectangle(New SolidBrush(Color.FromArgb(128, Color.Black)), rdraw) g.Dispose() End Sub End Class