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  • 窗体移动API和窗体阴影API

    //窗体移动API
    [DllImport("user32.dll")]
    public static extern bool ReleaseCapture();
    [DllImport("user32.dll")]
    public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int IParam);
    public const int WM_SYSCOMMAND = 0x0112;
    public const int SC_MOVE = 0xF010;
    public const int HTCAPTION = 0x0002;
    [DllImport("user32")]
    private static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, IntPtr lParam);
    private const int WM_SETREDRAW = 0xB;

    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
    if (this.WindowState == FormWindowState.Normal)
    {
    ReleaseCapture();
    SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
    }
    }

    //窗体阴影API

    1、添加命名空间:
    using System.Runtime.InteropServices;  
    
    2、定义常量值及函数:
    private const int CS_DropSHADOW = 0x20000;  
    private const int GCL_STYLE = (-26);  
    [DllImport("user32.dll", CharSet = CharSet.Auto)]  
    public static extern int SetClassLong(IntPtr hwnd, int nIndex, int dwNewLong);  
    [DllImport("user32.dll", CharSet = CharSet.Auto)]  
    public static extern int GetClassLong(IntPtr hwnd, int nIndex);
    
    
    3、构造方法下引用:
    SetClassLong(this.Handle, GCL_STYLE, GetClassLong(this.Handle, GCL_STYLE) | CS_DropSHADOW);  
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  • 原文地址:https://www.cnblogs.com/yujiamin123/p/7442534.html
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