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  • winform窗体移动和阴影API

    窗体移动API

    复制代码
    //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);
        }
    }
    复制代码

    窗体阴影API

    复制代码
    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);  
    复制代码
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  • 原文地址:https://www.cnblogs.com/weiyu11/p/6802143.html
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