[转]C#鼠标拖动任意控件

C#鼠标拖动任意控件(winform)

分类： c#2011-08-15 22:51 178人阅读 评论(0)  举报

winformc#userwindowsobjectapi

         using System.Runtime.InteropServices;

         //并为控件 添加 MouseDown 事件

         // C#鼠标拖动任意控件

         // 利用Windows的API函数：SendMessage 和 ReleaseCapture

         const uint WM_SYSCOMMAND = 0x0112;

         const uint SC_MOVE = 0xF010;

         const uint HTCAPTION = 0x0002;

         [DllImport("user32.dll", EntryPoint = "SendMessageA")]

         private static extern int SendMessage(IntPtr hwnd, uint wMsg, uint wParam, uint lParam);

         [DllImport("user32.dll")]

         private static extern int ReleaseCapture();

         void ControlMouseDown(object sender, MouseEventArgs e)

         {

             ReleaseCapture();

             SendMessage((sender as Control).Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, );

         }

来自：https://www.cnblogs.com/yangruiGB2312/p/5823943.html

[DllImport("user32.dll")]

public static extern bool ReleaseCapture();

[DllImport("user32.dll")]

public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

public const int WM_SYSCOMMAND = 0x0112;

public const int SC_MOVE = 0xF010;

public const int HTCAPTION = 0x0002;

/// <summary>

/// 为了是主界面能够移动

/// </summary>

/// <param name="sender"></param>

/// <param name="e"></param>

private void Form1_MouseDown(object sender, MouseEventArgs e)

{

    ReleaseCapture();

    SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, );

}