DrawArc
向量圖形
描述
在所選頁面上畫圓弧,從 StartAngle 到 EndAngle 順時針方向繪製
語法
Delphi
Function TPDFlib.DrawArc(XPos, YPos, Radius, StartAngle, EndAngle: Double; Pie, DrawOptions: Integer): Integer;
ActiveX
Function PDFlib::DrawArc(XPos As Double, YPos As Double, Radius As Double, StartAngle As Double, EndAngle As Double, Pie As Long, DrawOptions As Long) As Long
DLL
int DLDrawArc(int InstanceID, double XPos, double YPos, double Radius, double StartAngle, double EndAngle, int Pie, int DrawOptions);
參數
| XPos | 弧圓心的水平座標 |
|---|---|
| YPos | 弧圓心的垂直座標 |
| Radius | 弧的半徑 開始描繪的角度 |
| StartAngle | |
| EndAngle | Angle to end drawing at |
| Pie | 是否畫出弧的兩臂:0 = 否 1 = 是 |
| DrawOptions | 0 = 外框 1 = 填色 2 = 填色加外框 3 = 封閉、填色加外框(Pie = 1 時) |