C# 窗口透明

    
        
            using System;  
        
    




    
        
            using System.Collections.Generic;  
        
    




    
        
            using System.Text;  
        
    




    
        
            using System.Runtime.InteropServices;  
        
    




    
        
              
        
    




    
        
            namespace TransForm  
        
    




    
        
            {  
        
    




    
        
                class WinAPI  
        
    




    
        
                {  
        
    




    
        
                    [DllImport("user32.dll")]  
        
    




    
        
                    public extern static IntPtr GetDesktopWindow();  
        
    




    
        
              
        
    




    
        
                    [DllImport("user32.dll")]  
        
    




    
        
                    public extern static bool SetLayeredWindowAttributes(IntPtr hwnd, uint crKey, byte bAlpha, uint dwFlags);  
        
    




    
        
                    public static uint LWA_COLORKEY = 0x00000001;  
        
    




    
        
                    public static uint LWA_ALPHA = 0x00000002;  
        
    




    
        
              
        
    




    
        
                    [DllImport("user32.dll")]  
        
    




    
        
                    public extern static uint SetWindowLong(IntPtr hwnd, int nIndex, uint dwNewLong);  
        
    




    
        
                    [DllImport("user32.dll")]  
        
    




    
        
                    public extern static uint GetWindowLong(IntPtr hwnd, int nIndex);  
        
    




    
        
              
        
    




    
        
                    public enum WindowStyle : int 

补充：软件开发 , C# ,

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