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+{{logos:os2.gif?35x35}} {{logos:dos.gif?35x35}}
+====== VioShowBuf ======
+This call updates the physical display buffer with the logical video buffer (LVB).
+===== Syntax =====
+ VioShowBuf (Offset, Length, VioHandle)
+===== Parameters =====
+;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.
+===== Return Code =====
+ 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.
+===== Example Code =====
+==== C Binding ====
+<code c>
+#define INCL_VIO
+USHORT  rc = VioShowBuf(Offset, Length, VioHandle);
+USHORT           Offset;        /* Offset into LVB */
+USHORT           Length;        /* Length */
+HVIO             VioHandle;     /* Video handle */
+USHORT           rc;            /* return code */
+</code>
+==== MASM Binding ====
+<code asm>
+EXTRN  VioShowBuf:FAR
+INCL_VIO            EQU 1
+PUSH   WORD    Offset        ;Offset into LVB
+PUSH   WORD    Length        ;Length
+PUSH   WORD    VioHandle     ;Video handle
+CALL   VioShowBuf
+Returns WORD
+</code>
+====== Note ======
+Text based on [[http://www.edm2.com/index.php/VioShowBuf_(FAPI)]]
+{{page>en:templates:fapi}}