画线工具Line属性,在线等待!

在VB窗体上,画带有二头都是箭头的,左箭头,右箭头的线,要怎样画,如果需要写代码,请问代码如何写?很急的,大哥大姐请帮帮小弟 --------------------编程问答-------------------- 用线画 --------------------编程问答-------------------- Dim oldy&
Private Sub Command1_Click()
   oldy = Me.CurrentY
   Print Chr(41467)
   Line (Me.CurrentX, oldy + 80)-(3000, oldy + 80), QBColor(0)
   Me.CurrentY = oldy
   Print Chr(41466);
End Sub

--------------------编程问答-------------------- sub arrow(x1 as integer,y1  as integer,x2 as integer,y2 as integer,color as long)
dim theta as single
theta=atan((y2-y1)/(x2-x1))
line(x1,y1)-(x2,y2),color
line(x1,y1)-(x1+length*cos(theta),y1+length*sin(theta))
......
end sub --------------------编程问答-------------------- 我先给你写一个简单的例子，你可以再此基础上进一步发挥。

Option Explicit

Private Declare Function Polygon Lib "gdi32" (ByVal hdc As Long, lpPoint As POINTAPI, ByVal nCount As Long) As Long
Private Declare Function GetStockObject Lib "gdi32" (ByVal nIndex As Long) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Private Declare Function MoveToEx Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long, ByVal lpPoint As Long) As Long
Private Declare Function LineTo Lib "gdi32" (ByVal hdc As Long, ByVal x As Long, ByVal y As Long) As Long
'Private Declare Function LineDDA Lib "gdi32" (ByVal n1 As Long, ByVal n2 As Long, ByVal n3 As Long, ByVal n4 As Long, ByVal lpLineDDAProc As Long, ByVal lParam As Long) As Long
Private Const BLACK_BRUSH = 4

Private Type POINTAPI
        x As Long
        y As Long
End Type

Private Sub DrawTrigon(x1 As Long, x2 As Long, y As Long)
    Dim hBrush As Long, hPrevBrush As Long
    Dim points(1 To 4) As POINTAPI

    Me.ScaleMode = vbPixels

    points(1).x = x2 - 10
    points(1).y = y - 5

    points(2).x = x2 - 10
    points(2).y = y + 5

    points(3).x = x2
    points(3).y = y

    '画直线
    MoveToEx Me.hdc, x1, y, 0
    LineTo Me.hdc, x2, y
    '画三角
    hBrush = GetStockObject(BLACK_BRUSH)
    hPrevBrush = SelectObject(Me.hdc, hBrush)
    Call Polygon(Me.hdc, points(1), 3)
    Call SelectObject(Me.hdc, hPrevBrush)
End Sub

Private Sub Form_Paint()
    DrawTrigon 10, 200, 50
End Sub
--------------------编程问答-------------------- 我也想知道，正在找這方面的資料~~~~~ --------------------编程问答-------------------- lz要干嘛？ --------------------编程问答-------------------- 这个简单啊,网上搜一下就得到答案了.

补充：VB ,  基础类