vb.net 点击panel拖动功能的实现

首先在窗体类中写入以下公共代码

   Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As Integer) As Boolean

    Public Declare Function ReleaseCapture Lib "user32" Alias "ReleaseCapture" () As Boolean

    Public Const WM_SYSCOMMAND = &H112

    Public Const SC_MOVE = &HF010&

    Public Const HTCAPTION = 2

 

然后再Pannel的MouseDowm事件中加入以下代码：

 

Private Sub Panel1_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Panel1.MouseDown

        ReleaseCapture()

        SendMessage(Me.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0)

    End Sub

 

这样就解决了拖动功能！