GDI+: GdipGetPathTypes

[José Roca]

The following example creates a path and adds a sequence of three connected lines to the path. The code calls the GdipGetPointCount method to determine the number of bytes in the path's array of point types and then allocates a buffer large enough to hold that array. Then the code calls the GdipGetPathTypes method to fill the buffer with the array of point types.

C++

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GraphicsPath path;
Point pts[] = {Point(0, 0), Point(2, 2), Point(3, 3), Point(0, 5)};
path.AddLines(pts, 4);
INT num = path.GetPointCount();
BYTE* pTypes = new BYTE[num];
path.GetPathTypes(pTypes, num);


PowerBASIC

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SUB GDIP_GetPathTypes (BYVAL hdc AS DWORD)

   LOCAL hStatus AS LONG
   LOCAL pGraphics AS DWORD
   LOCAL pPath AS DWORD
   LOCAL i AS LONG
   LOCAL count AS LONG
   DIM   pts(3) AS POINTF
   DIM   Types(0) AS BYTE

   hStatus = GdipCreateFromHDC(hdc, pGraphics)
   hStatus = GdipCreatePath(%FillModeAlternate, pPath)
   pts(0).x = 0 : pts(0).y = 0
   pts(1).x = 2 : pts(1).y = 2
   pts(2).x = 3 : pts(2).y = 3
   pts(3).x = 0 : pts(3).y = 5
   hStatus = GdipAddPathLine2(pPath, pts(0), 4)
   hStatus = GdipGetPointCount(pPath, count)

   Outputdebugstring "Count = " & STR$(count)
   IF count THEN
      REDIM Types(count - 1)
      hStatus = GdipGetPathTypes(pPath, Types(0), count)
      FOR i = 0 TO count - 1
         OutputDebugString "Type" & STR$(i) & " =" & STR$(Types(i))
      NEXT
   END IF

   ' // Cleanup
   IF pPath THEN GdipDeletePath(pPath)
   IF pGraphics THEN GdipDeleteGraphics(pGraphics)

END SUB