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1997-05-22
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4KB
Date: 05-20-97 22:57
From: Hans Lunsing
Subj: Windows & QBasic
Hello Robin
On Sunday, 18 May 1997 12:24:28, you wrote to all:
RK> Complex question: Does anyone out there know if there is any
RK> way to get access to any Windows processes directly from a dos
RK> program? Lots come to mind, but the first one I can think of is the
RK> clipboard?
RK> It would be nice to use the clipboard in one step instead of
RK> losing your full screen everytime you copy or paste. Lots more
RK> comes to mind to a dedicated mouse hater.
The clipboard can be accessed through function &h17 of de multiplex
interrupt (&h2F). Here are its subfunctions (taken from Ralf Brown's
interrupt list):
INT 2F 1700 - MS Windows "WINOLDAP" - IDENTIFY WinOldAp VERSION
Inp.:
AX = 1700h
Return: AX = 1700h if this version of WINOLDAP doesn't support clipboard
AX <> 1700h
AL = WINOLDAP major version
AH = WINOLDAP minor version
Program: WinOldAp (WINOLDAP.MOD) is a Microsoft Windows extension supporting
"old" (character-mode) application access to Dynamic Data Exchange,
menus, and the Windows clipboard.
Note: this installation check DOES NOT follow the format used by other
software of returning AL=FFh
INT 2F 1701 - MS Windows "WINOLDAP" - OPEN CLIPBOARD
Inp.:
AX = 1701h
Return: AX = status
nonzero success
0000h clipboard is already open
SeeAlso: AX=1700h,AX=1702h,AX=1703h,AX=1704h,INT 16/AX=CB00h
INT 2F 1702 - MS Windows "WINOLDAP" - EMPTY CLIPBOARD
Inp.:
AX = 1702h
Return: AX = status
nonzero clipboard has been emptied
0000h failure
INT 2F 1703 - MS Windows "WINOLDAP" - SET CLIPBOARD DATA
Inp.:
AX = 1703h
DX = clipboard format supported by WinOldAp (see #2005)
ES:BX -> data (see #2006,#2007)
SI:CX = size of data
Return: AX = status
nonzero data copied into the Clipboard
0000h failure
INT 2F 1704 - MS Windows "WINOLDAP" - GET CLIPBOARD DATA SIZE
Inp.:
AX = 1704h
DX = clipboard format supported by WinOldAp (see #2005)
Return: DX:AX = size of data in bytes, including any headers
0000h:0000h if no data in this format in the Clipboard
Note: Windows reportedly rounds up the size of the data to a multiple of
32
bytes
INT 2F 1705 - MS Windows "WINOLDAP" - GET CLIPBOARD DATA
Inp.:
AX = 1705h
DX = clipboard format supported by WinOldAp (see #2005)
ES:BX -> buffer
Return: AX = status
nonzero success
0000h error, or no data in this format in Clipboard
INT 2F 1708 - MS Windows "WINOLDAP" - CloseClipboard
Inp.:
AX = 1708h
Return: AX = status
0000h failure
nonzero success
INT 2F 1709 - MS Windows "WINOLDAP" - COMPACT CLIPBOARD
Inp.:
AX = 1709h
SI:CX = desired size in bytes
Return: DX:AX = number of bytes in largest block of free memory
Note: WinOldAp is responsible for including the size of any headers
INT 2F 170A - MS Windows "WINOLDAP" - GET DEVICE CAPABILITIES
Inp.:
AX = 170Ah
DX = GDI information index (see #2008)
Return: AX = integer value of the desired item
(see #2009,#2010,#2011,#2012,#2013,#2014,#2015)
Note: This function returns the device-capability bits for the given
display
DOS applications can cooperate with Windows through function &h16 of de
multiplex interrupt. See Ralf Brown's interrupt list for details.
Friendly greeting you,
Hans Lunsing, Fido : 2:281/607.214
Internet : jlunsing@doge.nl