Windows API Guide: EnumWindows Function

---

Declare Function GetArcDirection Lib "gdi32.dll" (ByVal hdc As Long)

Platforms: Win 32s, Win 95/98, Win NT

GetArcDirection determines the direction in which arcs are drawn on a graphics-capable device. Arcs can be drawn either clockwise or counterclockwise from the starting point to the ending point. Although this function is supported in Win 95/98, that platform ignores the setting and always draws arcs counterclockwise! The function returns 0 if an error occured, or exactly one of the following flags specifying which direction arcs on the device will be drawn:

AD_CLOCKWISE = 2

Arcs are drawn clockwise from the starting point to the ending point.

AD_COUNTERCLOCKWISE = 1

Arcs are drawn counterclockwise from the starting point to the ending point.

hdc

The device context of the device to find the arc-drawing direction of.

Example:

' Display which direction window Form1 draws arcs. Dim arcdir As Long  ' receives arc direction arcdir = GetArcDirection(Form1.hDC)  ' get the arc direction for Form1 If arcdir = AD_CLOCKWISE Then   Debug.Print "Form1 draws arcs clockwise." ElseIf arcdir = AD_COUNTERCLOCKWISE Then   Debug.Print "Form1 draws arcs counterclockwise." End If

See Also: AngleArc, Arc, ArcTo, SetArcDirection
Category: Lines & Curves

Go back to the alphabetical Function listing.
Go back to the Reference section index.

---

This page is copyright © 2000 Paul Kuliniewicz. Copyright Information.
Go back to the Windows API Guide home page.
E-mail: [e-mail] Send Encrypted E-Mail
This page is at http://www.vbapi.com/ref/g/getarcdirection.html