VioShowBuf

Bindings:  C, MASM 

This call updates the physical display buffer with the logical video 
buffer (LVB). 

 VioShowBuf    (Offset, Length, VioHandle) 
 

 Offset (USHORT) - input 
    Starting offset within the logical video buffer at which the update to 
    the screen is to start. 

 Length (USHORT) - input 
    Length of the area to be updated to the screen. 

 VioHandle (HVIO) - input 
    This must be zero unless the caller is a Presentation Manager 
    application, in which case it must be the value returned by VioGetPs. 

 rc (USHORT) - return 
    Return code descriptions are: 

    0         NO_ERROR 
    355       ERROR_VIO_MODE 
    430       ERROR_VIO_ILLEGAL_DURING_POPUP 
    436       ERROR_VIO_INVALID_HANDLE 
    465       ERROR_VIO_DETACHED 
 
 Remarks 

 VioShowBuf is ignored unless it is issued by a process that has 
 previously called VioGetBuf and that is currently executing in the 
 foreground. 

 
 PM Considerations 

 This function updates the display with the Advanced VIO presentation 
 space.