VioScrUnLock: Difference between revisions
Created page with "==Description== Releases ownership of (unlocks) the physical display buffer. ==Syntax== <PRE> #define INCL_VIO #include <os2.h> HVIO VioHandle; /* VIO presentation-sp..." |
m Ak120 moved page OS2 API:CPI:VioScrUnLock to VioScrUnLock |
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Revision as of 10:22, 10 January 2017
Description
Releases ownership of (unlocks) the physical display buffer.
Syntax
#define INCL_VIO #include <os2.h> HVIO VioHandle; /* VIO presentation-space handle. */ APIRET rc; /* Return code. */ rc = VioScrUnLock(VioHandle);
Parameters
- VioHandle (HVIO) - input
- VIO presentation-space handle.
Reserved. Must be 0.
Return Code
rc (APIRET) - returns
VioScrlUnLock returns one of the following values:
- 0 NO_ERROR
- 367 ERROR_VIO_UNLOCK
- 421 ERROR_VIO_INVALID_PARMS
- 430 ERROR_VIO_ILLEGAL_DURING_POPUP
- 436 ERROR_VIO_INVALID_HANDLE
Remarks
This call releases the screen lock that is set by VioScrLock. The VioScrUnLock call must be issued by the same thread that issued VioScrLock.
Example Code
Related Functions
- [[OS2 API:CPI: