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PdSetTargetDevice()

Set the target device

Synopsis:

PhRid_t PdSetTargetDevice ( const void *dc,
                        PhRid_t device_rid );

Arguments:

dc

A void pointer to any type of draw context, or NULL for the current draw context. Examples of draw contexts are:

• a PhDrawContext_t returned by PhDCCreate()
• a PmMemoryContext_t returned by PmMemCreateMC()
• a PpPrintContext_t returned by PpCreatePC()
• a PdOffscreenContext_t returned by PdCreateOffscreenContext()

device_rid

The region ID of the device that you want to be the target. To get the region IDs for the currently available draw devices, call PdGetDevices().

Library:

ph

Description:

This function sets the device with the given region ID to be the target for device-specific queries and control operations in the given draw context. By default, the target is the screen.

You can target the following functions at specific cards:

• PdCreateDirectContext()
• PdCreateOffscreenContext()
• PdDupOffscreenContext()
• PdReleaseDirectContext()
• PgGetGraphicsHWCaps()
• PgGetPalette()
• PgGetVideoMode()
• PgGetVideoModeInfo()
• PgGetVideoModeList()
• PgReadScreen()
• PgReadScreenSize()
• PgSetVideoMode()
• PgWaitDrawComplete()
• PgWaitHWIdle()

Returns:

The region ID of the previously set device, or 0 if no device was set

Success.

-1

An error occurred.

Examples:

See PdCreateDirectContext().

Classification:

Photon

Safety:
Interrupt handler	No
Signal handler	No
Thread	No

See also:

PdGetDevices()

"Video memory offscreen" in the Raw Drawing and Animation chapter of the Photon Programmer's Guide

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