HOWTO: Implement Filled Geometric Lines In Windows 95 & 98
ID: Q230057
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The information in this article applies to:
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Microsoft Windows 98, included with:
-
Microsoft Win32 Application Programming Interface (API)
SUMMARY
In Windows 95 and 98 using ExtCreatePen, you cannot create a (wide)
geometric pen that is filled by a brush pattern. As a result, Windows 95 and 98 geometric pens (the PS_GEOMETRIC style) are limited to the BS_SOLID brush style specified in the LOGBRUSH structure passed to ExtCreatePen.
MORE INFORMATION
However, to achieve a similar effect you can use paths such as the following code demonstrates.
/* Demonstrates patterned pen effect using paths. */
/* This is a Demo only...no error handling. */
void DemoPatternPen(HDC hDC, HBITMAP hBitmap, int iWidth,
int x1, int y1, int x2, int y2)
{
HBRUSH hBrush, hOldBrush;
LOGBRUSH lb;
HPEN hPen, hOldPen;
BOOL bFlag;
/* Create and select a brush... */
hBrush = CreatePatternBrush(hBitmap);
hOldBrush = SelectObject(hDC, hBrush);
/* Create and select a wide geometric pen... */
ZeroMemory(&lb, sizeof(LOGBRUSH));
lb.lbStyle = BS_SOLID;
lb.lbColor = RGB(0,0,0);
hPen = ExtCreatePen(PS_GEOMETRIC, iWidth, &lb, 0, NULL);
hOldPen = SelectObject(hDC, hPen);
/* Create a path containing the line(s) we want to fill... */
bFlag = BeginPath(hDC);
MoveToEx(hDC, x1, y1, NULL);
LineTo(hDC, x2, y2);
bFlag = EndPath(hDC);
/* Fill (widened, pen-width) path with our brush... */
bFlag = WidenPath(hDC);
bFlag = FillPath(hDC);
/* Cleanup... */
SelectObject(hDC, hOldBrush);
DeleteObject(hBrush);
SelectObject(hDC, hOldPen);
DeleteObject(hPen);
return;
}
Additional query words:
BS_PATTERN
Keywords : kbGDI kbPen
Version : WINDOWS:
Platform : WINDOWS
Issue type : kbhowto