请问如何做出form下拉回缩的效果

[seabird125]

就是类似QQ上缩窗口一样。。。。。。要看起来象是收上去的

[programfish]

可以用专门的控件。

[snowwolf80]

帮顶，哪里有这样的控件，偶也想要

[Alzzl]

用个timer控件递减form的height

[chanfengsr]

补充一下收缩是递减是要有加速度的～～不然很难看

[seabird125]

只控制form的height很难看的

[JRS123]

提供一组代码,看看能不能满足你的需要.
Private Declare Function GetCursorPos Lib "user32" (lpPoint As POINTAPI) As Long
Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Declare Function PtInRect Lib "user32" (lpRect As RECT, ByVal ptx As Long, ByVal pty As Long) As Long
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter _
As Long, ByVal X As Long, ByVal Y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Private Declare Function MoveWindow Lib "user32" (ByVal hwnd As Long, ByVal X As Long, _
ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal bRepaint As Long) As Long
Const HWND_TOPMOST = -1
Private Type POINTAPI
X As Long
Y As Long
End Type
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Is_Move_B As Boolean
Private Is_Movestar_B As Boolean
Private MyRect As RECT
Private MyPoint As POINTAPI
Private Movex As Long, Movey As Long
Private max As Long


Private Sub Form_Load()
Timer1.Interval = 50: Timer2.Interval = 1000
Form1.BackColor = vbBlue
Get_Windows_Rect
Picture1.Width = 10745
Form1.Width = 10770

End Sub
Sub Get_Windows_Rect()
Dim dl&
max = 2200: Form1.Height = max '窗体高度调整
Form1.Top = 0
dl& = GetWindowRect(Form1.hwnd, MyRect)
End Sub
Private Sub Form_Paint()
If PtInRect(MyRect, MyPoint.X, MyPoint.Y) = 0 Then
SetWindowPos Me.hwnd, HWND_TOPMOST, Me.Left / Screen.TwipsPerPixelX, _
Me.Top \ Screen.TwipsPerPixelY, Me.Width \ Screen.TwipsPerPixelX, _
Form1.Height \ Screen.TwipsPerPixelY, 0
End If
End Sub
Private Sub Timer1_Timer()
Dim dl&
dl& = GetCursorPos(MyPoint)
If (PtInRect(MyRect, MyPoint.X, MyPoint.Y) And _
Form1.Height = max) Or MyPoint.Y <= 30 Then
Form1.BackColor = vbBlue
Form1.Height = max
If MyPoint.X - MyRect.Left <= 10 Or Is_Movestar_B Then
Screen.MousePointer = 15
Is_Move_B = True
Else
Screen.MousePointer = 0
Is_Move_B = False
End If
Else
If Not Is_Movestar_B Then
Form1.Height = 30
End If
End If
End Sub