GxFpga3571SetModeline

Sets the specified modeline parameter.

GxFpgaSetModeline (nHandle ,nScroll, nSignal, dwValue, pnStatus)

Name	Type	Comments
nHandle	SHORT	Handle to a GX3500 board.
nScroll	SHORT	The scroll can be as follows: 0. GXFPGA_3571_MODELINE_SCROLL_HORIZONTAL. 1. GXFPGA_3571_MODELINE_ SCROLL_VERTICAL.
nSignal	SHORT	The modeline signal parameter can be as follows: 0. GXFPGA_3571_MODELINE_ SIGNAL_ SYNC. 1. GXFPGA_3571_MODELINE_ SIGNAL_FRONT_PORCH. 2. GXFPGA_3571_MODELINE_ SIGNAL_SYNC_PULSE. 3. GXFPGA_3571_MODELINE_ SIGNAL_BACK_PORCH.
dwValue	PDWORD	See comments below.
pnStatus	PSHORT	Returned status: 0 on success, negative number on failure.

The value for dwValue is dependent on the signal parameter requested:

GXFPGA_3571_MODELINE_ SIGNAL_SYNC – The returned value is the number of pixels per line.

GXFPGA_3571_MODELINE_ SIGNAL_FRONT_PORCH – The number of black pixels drawn to the right / bottom of the screen.

GXFPGA_3571_MODELINE_ SIGNAL_SYNC_PULSE – The amount of time it takes: to start another line / move back up to the first line.

GXFPGA_3571_MODELINE_ SIGNAL_BACK_PORCH – The number of black pixels drawn to the left / top of the screen.

The following example sets the number of pixels per line on the horizontal scroll to 720:

GxFpga3571SetModeline (nHandle, GXFPGA_3571_MODELINE_SCROLL_HORIZONTAL, GXFPGA_3571_MODELINE_ SIGNAL_SYNC, 720, &nStatus);