IG_ISIS_drv

Send a message to a driver's internal data structure.

Declaration:

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AT_ERRCOUNT ACCUAPI IG_ISIS_drv_send( HISISDRV hDriver, WORD wMessage, LONG lParam1, LONG lParam2 );

Arguments:

Name	Type	Description
hDriver	HISISDRV	The handle of the driver to which the message and parameters are being sent.
wMessage	WORD	The message to pass to the driver.
lParam1	LONG	The first parameter of the message. (Most messages have two parameters.)
lParam2	LONG	The second parameter of the message.

Return Value:

Returns the number of ImageGear errors that occurred during this function call. If there are no errors, the return value is IGE_SUCCESS.

Supported Raster Image Formats:

This function does not process image pixels.

Example:

The following example does the functional equivalent of sending a IG_ISIS_tag_set_long function to a driver to set the image width.

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IG_ISIS_drv_send(hDriver, IG_ISIS_tag_set_long, MAKELONG(IG_ISIS_TAG_IMAGEWIDTH, 0), 2550)

Remarks:

The IG_ISIS_drv_send function calls the message handler of the driver identified by hDriver (hDriver->hData) and passes wMessage, lParam1, and lParam2 to its internal data structure.

Each ISIS driver has a single entry point through which it communicates. This entry point is accessed by sending messages together with parameters using IG_ISIS_drv_send.