protected virtual HCShapeLineObj GetObjAt(int x, int y)
{
HCShapeLineObj vResult = HCShapeLineObj.sloNone;
if (HC.PtInRect(new RECT(FStartPt.X - PointSize, FStartPt.Y - PointSize,
FStartPt.X + PointSize, FStartPt.Y + PointSize), new POINT(x, y)))
{
vResult = HCShapeLineObj.sloStart;
}
else
if (HC.PtInRect(new RECT(FEndPt.X - PointSize, FEndPt.Y - PointSize,
FEndPt.X + PointSize, FEndPt.Y + PointSize), new POINT(x, y)))
{
vResult = HCShapeLineObj.sloEnd;
}
else
{
POINT[] vPointArr = new POINT[4];
vPointArr[0] = new POINT(FStartPt.X - PointSize, FStartPt.Y);
vPointArr[1] = new POINT(FStartPt.X + PointSize, FStartPt.Y);
vPointArr[2] = new POINT(FEndPt.X + PointSize, FEndPt.Y);
vPointArr[3] = new POINT(FEndPt.X - PointSize, FEndPt.Y);
IntPtr vRgn = GDI.CreatePolygonRgn(vPointArr, 4, GDI.WINDING);
try
{
if (GDI.PtInRegion(vRgn, x, y))
{
vResult = HCShapeLineObj.sloLine;
}
}
finally
{
GDI.DeleteObject(vRgn);
}
}
return(vResult);
}
protected int GetLineAt(int x, int y)
{
POINT[] vPointArr = new POINT[4];
IntPtr vRgn = IntPtr.Zero;
for (int i = 0; i < FPoints.Count; i++)
{
vPointArr[0] = new POINT(FPoints[i].X - PointSize, FPoints[i].Y);
vPointArr[1] = new POINT(FPoints[i].X + PointSize, FPoints[i].Y);
if (i == FPoints.Count - 1)
{
vPointArr[2] = new POINT(FPoints[0].X + PointSize, FPoints[0].Y);
vPointArr[3] = new POINT(FPoints[0].X - PointSize, FPoints[0].Y);
}
else
{
vPointArr[2] = new POINT(FPoints[i + 1].X + PointSize, FPoints[i + 1].Y);
vPointArr[3] = new POINT(FPoints[i + 1].X - PointSize, FPoints[i + 1].Y);
}
vRgn = GDI.CreatePolygonRgn(vPointArr, 4, GDI.WINDING);
try
{
if (GDI.PtInRegion(vRgn, x, y))
{
return(i);
}
}
finally
{
GDI.DeleteObject(vRgn);
}
}
return(-1);
}
private HCLineObj GetLineObjAt(int X, int Y)
{
HCLineObj Result = HCLineObj.cloNone;
if (HC.PtInRect(new RECT(FStartPt.X - PointSize, FStartPt.Y - PointSize, FStartPt.X + PointSize, FStartPt.Y + PointSize), new POINT(X, Y)))
{
Result = HCLineObj.cloLeftOrTop;
}
else
if (HC.PtInRect(new RECT(FEndPt.X - PointSize, FEndPt.Y - PointSize, FEndPt.X + PointSize, FEndPt.Y + PointSize), new POINT(X, Y)))
{
Result = HCLineObj.cloRightOrBottom;
}
else
{
POINT[] vPointArr = new POINT[4];
vPointArr[0] = new POINT(FStartPt.X - PointSize, FStartPt.Y);
vPointArr[1] = new POINT(FStartPt.X + PointSize, FStartPt.Y);
vPointArr[2] = new POINT(FEndPt.X + PointSize, FEndPt.Y);
vPointArr[3] = new POINT(FEndPt.X - PointSize, FEndPt.Y);
IntPtr vRgn = (IntPtr)GDI.CreatePolygonRgn(ref vPointArr[0], 4, GDI.WINDING);
try
{
if (GDI.PtInRegion(vRgn, X, Y) > 0)
{
Result = HCLineObj.cloLine;
}
}
finally
{
GDI.DeleteObject(vRgn);
}
}
return(Result);
}