clipping path

stanlvw · 07-23-2008, 11:47 PM

I'm trying to draw a structure in Windows GDI within a certain clip path to verify the functionalities of my printer driver. However, I would like to confirm about whether my client application test code would be functional since I have been encounterring some problems with the clip path that I would like to isolate between the client application and the driver.

This is my clip region drawing function.

Code:

void RectDraw(HDC *hdc)
{
	BOOL success;
	int nX = 150; 
	int nY = 150; 
	DWORD dwRadius = 100; 
	float xStartAngle = 60; 
	float xSweepAngle = 60;
	HGDIOBJ hNewObj;
	HBRUSH hBrush;

	POINT points[] = {
		{1700, 1700},
		{2000, 2000},
		{2562, 1503}
	};

	// set up the brush
	hBrush = CreateSolidBrush(RGB(44, 25, 64));

	// Begin Path
	success = BeginPath(*hdc);

	// Create a Path
	success = Rectangle(*hdc, 150, 150, 200, 200);

	success = EndPath(*hdc); 
	success = SelectClipPath(*hdc, RGN_AND);
}

The clip region drawing function is called before the pie path filling function, like as shown below:

Code:

RectDraw(&hDC);
PieDraw(&hDC);                                 // has shown to work

The clipping path function is implemented roughly according to the documentation on Windows GDI in MSDN. Any comments would be muchly appreciated.

07-23-2008, 11:47 PM	#1
stanlvw Registered User Join Date: Jul 2004 Posts: 222	clipping path I'm trying to draw a structure in Windows GDI within a certain clip path to verify the functionalities of my printer driver. However, I would like to confirm about whether my client application test code would be functional since I have been encounterring some problems with the clip path that I would like to isolate between the client application and the driver. This is my clip region drawing function. Code: void RectDraw(HDC hdc) { BOOL success; int nX = 150; int nY = 150; DWORD dwRadius = 100; float xStartAngle = 60; float xSweepAngle = 60; HGDIOBJ hNewObj; HBRUSH hBrush; POINT points[] = { {1700, 1700}, {2000, 2000}, {2562, 1503} }; // set up the brush hBrush = CreateSolidBrush(RGB(44, 25, 64)); // Begin Path success = BeginPath(hdc); // Create a Path success = Rectangle(hdc, 150, 150, 200, 200); success = EndPath(hdc); success = SelectClipPath(*hdc, RGN_AND); } The clip region drawing function is called before the pie path filling function, like as shown below: Code: RectDraw(&hDC); PieDraw(&hDC); // has shown to work The clipping path function is implemented roughly according to the documentation on Windows GDI in MSDN. Any comments would be muchly appreciated.
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