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14. Get screen image. <Main>
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[Name]
_getimage
[Syntax]
#include <graph.h>
void _getimage( short rsx, short rsy,
short rex, short rey, char *image ) ;
[Description]
Gets the screen image and stores it in memory.
[Compatibility]
<MS-C Non-Compatible Specification>
(1) The maximum image size is 64K bytes because "huge" data is
unavailable in C Executor.
<MS-C Compatible Specification>
(1) The following graphic statuses are returned by the "_grstatus"
function after the execution of this function.
Executed successfully : _GROK
Could not store the image : _GRERROR
Executed in text mode : _GRNOTINPROPERMODE
The left-top and the right-bottom : _GRPARAMETERALTERED
coordinates are exchanged.