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oldlinux-files/docs/interrupts/int-html/rb-1259.htm
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<TITLE>Int 15/AH=12h/BH=12h
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Int 15/AH=12h/BH=12h - TopView - SEND MESSAGE - READN - GET NEXT N OBJECT BYTES -
AH = 12h
BH = 12h
BL = window to read from
00h handle is DWORD on top of stack
01h read next N chars or attributes on task's default window
0Ch (DV 2.26+) read window of task owning handle on top of stack
0Dh (DV 2.26+) read default window of parent of current task
STACK: DWORD count
Return: STACK: DWORD number of bytes actually read
DWORD address of buffer containing data
">
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<h2>Int 15/AH=12h/BH=12h
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<h3><font color=#C00040>TopView - SEND MESSAGE - READN - GET NEXT N OBJECT BYTES</font></h3>
<PRE>
AH = 12h
BH = 12h
BL = window to read from
00h handle is DWORD on top of stack
01h read next N chars or attributes on task's default window
0Ch (DV 2.26+) read window of task owning handle on top of stack
0Dh (DV 2.26+) read default window of parent of current task.
<p><b>STACK:</b><br>DWORD count<br>
<p><b>Return:</b><br>STACK: DWORD number of bytes actually read
DWORD address of buffer containing data
</PRE>
<p><b>Notes:</b>
Reading starts at the current logical cursor position; the cursor is
updated to point at the character following the last one read.
Any translucent blanks (FFh) which are visible on screen are changed
to the character which is seen through them.
The string produced by the read is placed in an input buffer which may
be reused by the next READ or READN of a window.
Window stream opcodes D8h and D9h determine whether the read returns
characters or attributes
<p><b>See Also:</b>
<a href="rb-1202.htm" tppabs="http://www.ctyme.com/intr/rb-1202.htm">AH=12h/BH=04h"WINDOW"</a> - <a href="rb-1202.htm" tppabs="http://www.ctyme.com/intr/rb-1202.htm">AH=12h/BH=05h"WINDOW"</a>
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<b>Category: <a href="cat-007.htm" tppabs="http://www.ctyme.com/intr/cat-007.htm">
DESQview/TopView and Quarterdeck Programs</a>
- <a href="int-15.htm" tppabs="http://www.ctyme.com/intr/int-15.htm">
Int 15h</a>
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