高校问答dnf90版本男机械:VB中拖动窗体
来源：百度文库 编辑：高校问答 时间：2024/04/27 22:37:46
当是图形窗口时，怎么才能用鼠标拖动窗口？？？
Private Declare Function ReleaseCapture Lib "user32" () As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Const WM_SYSCOMMAND = &H112
Private Const SC_MOVE = &HF010&
Private Const WM_NCLBUTTONDOWN = &HA1
Private Const HTCAPTION = 2
Private Sub Command1_Click()
End
End Sub
Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
ReleaseCapture
SendMessage Me.hwnd, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0
'SendMessage hwnd, WM_NCLBUTTONDOWN, HTCAPTION, 0&
'上述两种方法都能实现该功能。
End Sub