如何創建的C＃Windows應用程序中的部分透明的面板

Question

我得到了一些代碼了從互聯網上，使面板純粹透明，但在這裏，我需要做透明面板有點暗像下面

圖片

透明面板的代碼是： -

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 
using System.Drawing; 
using System.Drawing.Drawing2D; 
using System.Drawing.Imaging; 

namespace Test 
{ 
    public class TransparentPanel : Panel 
    { 
     protected override CreateParams CreateParams 
     { 
      get 
      { 
       CreateParams cp = base.CreateParams; 
       cp.ExStyle |= 0x00000020; // WS_EX_TRANSPARENT 
       return cp; 
      } 
     } 
     protected override void OnPaintBackground(PaintEventArgs e) 
     { 
      //base.OnPaintBackground(e); 
     } 
    } 
} 

誰能幫助我在這裏。任何代碼將不勝感激。

Answer 1

您需要使用：Aero desktop experience，你可以找到的信息：Create Special Effects With The Desktop Window Manager

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 

namespace FixedFormWithAeroGlass 
{ 
    public class Form1 : Form 
    { 
     [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)] 
     public struct DWM_BLURBEHIND 
     { 
     public uint dwFlags; 
     [System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.Bool)] 
     public bool fEnable; 
     public IntPtr hRegionBlur; 
     [System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.Bool)] 
     public bool fTransitionOnMaximized; 

     public const uint DWM_BB_ENABLE = 0x00000001; 
     public const uint DWM_BB_BLURREGION = 0x00000002; 
     public const uint DWM_BB_TRANSITIONONMAXIMIZED = 0x00000004; 
     } 

     [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)] 
     public struct RECT 
     { 
     public int left, top, right, bottom; 

     public RECT(int left, int top, int right, int bottom) 
     { 
      this.left = left; this.top = top; 
      this.right = right; this.bottom = bottom; 
     } 
     } 

     [System.Runtime.InteropServices.DllImport("dwmapi.dll", PreserveSig = false)] 
     public static extern int DwmEnableBlurBehindWindow(System.IntPtr hWnd, ref DWM_BLURBEHIND pBlurBehind); 

     public const int DWM_BB_ENABLE = 0x1; 
     public const int DWM_BB_BLURREGION = 0x2; 
     public const int DWM_BB_TRANSITIONONMAXIMIZED = 0x4; 

     private System.ComponentModel.IContainer components = null; 

     public Form1() 
     { 
     InitializeComponent(); 

     FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog; 
     } 

     #region Windows Form Designer generated code 

     private void InitializeComponent() 
     { 
     this.SuspendLayout(); 
     // 
     // Form1 
     // 
     this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); 
     this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 
     this.ClientSize = new System.Drawing.Size(470, 342); 
     this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle; 
     this.Name = "Form1"; 
     this.ResumeLayout(false); 

     } 

     #endregion 

     protected override void OnPaintBackground(PaintEventArgs e) 
     { 
     base.OnPaintBackground(e); 

     e.Graphics.Clear(BackColor); 
     using (Brush b = new SolidBrush(Color.FromArgb(196, Color.Black))) 
      e.Graphics.FillRectangle(b, ClientRectangle); 
     } 

     protected override void OnLoad(EventArgs e) 
     { 
     base.OnLoad(e); 

     DWM_BLURBEHIND dbb; 
     dbb.fEnable = true; 
     dbb.dwFlags = DWM_BB_ENABLE | DWM_BB_BLURREGION; 

     using (Graphics g = CreateGraphics()) 
      dbb.hRegionBlur = new Region(new Rectangle(0, 0, Width, Height)).GetHrgn(g); 

     dbb.fTransitionOnMaximized = false; 

     DwmEnableBlurBehindWindow(this.Handle, ref dbb); 
     } 

     protected override void Dispose(bool disposing) 
     { 
     if (disposing && (components != null)) 
     { 
      components.Dispose(); 
     } 
     base.Dispose(disposing); 
     } 
    } 
} 

，並與對照窗口的例子

using System; 
using System.Collections.Generic; 
using System.ComponentModel; 
using System.Data; 
using System.Drawing; 
using System.Linq; 
using System.Text; 
using System.Windows.Forms; 

namespace AddingControlsInAeroStyleForm 
{ 
    public class Form1 : Form 
    { 
     [System.Runtime.InteropServices.DllImport("dwmapi.dll", PreserveSig = false)] 
     public static extern void DwmExtendFrameIntoClientArea(IntPtr hWnd, ref MARGINS pMargins); 

     [System.Runtime.InteropServices.StructLayout(System.Runtime.InteropServices.LayoutKind.Sequential)] 
     public struct MARGINS 
     { 
     public int Left, Right, Top, Bottom; 

     public MARGINS(int left, int top, int right, int bottom) 
     { 
      Left = left; 
      Top = top; 
      Right = right; 
      Bottom = bottom; 
     } 

     public MARGINS(int margin) 
     { 
      Left = margin; 
      Top = margin; 
      Right = margin; 
      Bottom = margin; 
     } 
     } 

     private System.Windows.Forms.Panel panel1; 
     private System.Windows.Forms.Button button1; 

     /// <summary> 
     /// Required designer variable. 
     /// </summary> 
     private System.ComponentModel.IContainer components = null; 

     public Form1() 
     { 
     InitializeComponent(); 

     MARGINS margins = new MARGINS(-1); 

     DwmExtendFrameIntoClientArea(this.Handle, ref margins); 
     } 

     private void Form1_Load(object sender, EventArgs e) 
     { 
     this.TransparencyKey = Color.FromArgb(255, Color.Black); 
     panel1.BackColor = Color.FromArgb(255, Color.Black); 

     } 

     /// <summary> 
     /// Clean up any resources being used. 
     /// </summary> 
     /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param> 
     protected override void Dispose(bool disposing) 
     { 
     if (disposing && (components != null)) 
     { 
      components.Dispose(); 
     } 
     base.Dispose(disposing); 
     } 

     #region Windows Form Designer generated code 

     /// <summary> 
     /// Required method for Designer support - do not modify 
     /// the contents of this method with the code editor. 
     /// </summary> 
     private void InitializeComponent() 
     { 
     this.panel1 = new System.Windows.Forms.Panel(); 
     this.button1 = new System.Windows.Forms.Button(); 
     this.panel1.SuspendLayout(); 
     this.SuspendLayout(); 
     // 
     // panel1 
     // 
     this.panel1.Controls.Add(this.button1); 
     this.panel1.Dock = System.Windows.Forms.DockStyle.Fill; 
     this.panel1.Location = new System.Drawing.Point(0, 0); 
     this.panel1.Name = "panel1"; 
     this.panel1.Size = new System.Drawing.Size(374, 303); 
     this.panel1.TabIndex = 0; 
     // 
     // button1 
     // 
     this.button1.FlatAppearance.BorderSize = 0; 
     this.button1.Location = new System.Drawing.Point(202, 23); 
     this.button1.Name = "button1"; 
     this.button1.Size = new System.Drawing.Size(125, 70); 
     this.button1.TabIndex = 0; 
     this.button1.UseVisualStyleBackColor = true; 
     // 
     // Form1 
     // 
     this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); 
     this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 
     this.ClientSize = new System.Drawing.Size(374, 303); 
     this.Controls.Add(this.panel1); 
     this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog; 
     this.MaximizeBox = false; 
     this.MinimizeBox = false; 
     this.Name = "Form1"; 
     this.Text = "Form1"; 
     this.Load += new System.EventHandler(this.Form1_Load); 
     this.panel1.ResumeLayout(false); 
     this.ResumeLayout(false); 

     } 

     #endregion 


    } 
}