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新建工程,窗体上放一个按钮:Option Explicit
Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Private Declare Function MoveToEx Lib "gdi32" (ByVal hdc As Long, ByVal X As Long, ByVal Y As Long, lpPoint As PointAPI) As Long
Private Declare Function LineTo Lib "gdi32" (ByVal hdc As Long, ByVal X As Long, ByVal Y As Long) As Long
Private Type PointAPI
X As Long
Y As Long
End Type
Private Sub Command1_Click()
Dim hdc As Long
Dim P As PointAPI
hdc = GetDC(0)
MoveToEx hdc, 200, 100, P
LineTo hdc, 1200, 400
End Sub