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• Search and Replace in Binary Buffer
• Splitting Registry Binary Entry for Writing to INI File
• System Ini writing multiple device lines to
• System.Ini and Device lines
• Use Binary Functions to Edit INI Files
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• Using BinaryPeek to Find Null 00 Character

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System.Ini and Device= lines

Keywords:  system.ini device= system.ini binaryindex binaryread binarypokestr  386enh

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Question:

How do I add a Device= line to my System.ini without overwriting an existing line?

Answer:

The Binary Functions must be used to edit the [386 enhanced] section of the System.ini, especially to change to add Device= lines.

The following example shows how. This is from the BinaryPokeStr function:

	; This example writes a new device= line to SYSTEM.INI
	; It is *very* fast
	NewDevice = "DEVICE=COOLAPP.386"
	;
	; Change to the Windows Directory
	DirChange(DirWindows(0))
	;
	; Obtain filesize and allocate binary buffers
	fs1=FileSize("SYSTEM.INI")
	srcbuf	= BinaryAlloc(fs1)
	editbuf = BinaryAlloc(fs1+100)
	;
	; Read existing system.ini into memory
	BinaryRead( srcbuf, "SYSTEM.INI")
	;
	; See if this change was already installed.  If so, quit
	a = BinaryIndex( srcbuf, 0, "COOLAPP.386", @FWDSCAN)
	if a != 0 then goto AlreadyDone
	;
	; Find 386Enh section.
	a = BinaryIndex( srcbuf, 0, "[386Enh]", @FWDSCAN)
	;
	;
	; Find beginning of next line ( add 2 to skip over our crlf )
	cuthere = BinaryIndex( srcbuf, a, @CRLF, @FWDSCAN) + 2
	;
	; Copy data from beginning of file to just after [386Enh]
	; to the edit buffer
	BinaryCopy( editbuf, 0, srcbuf, 0, cuthere)
	;
	; Add the device= line to the end of the edit buffer, and add a CRLF
	BinaryPokeStr( editbuf, BinaryEodGet(editbuf), strcat(NewDevice,@CRLF))
	;
	; Copy remaining part of source buffer to the edit buffer
	a = BinaryEodGet(editbuf)
	b = BinaryEodGet(srcbuf)
	BinaryCopy( editbuf, a, srcbuf, cuthere, b-cuthere)
	;
	; Save file out to disk.  Use system.tst until it is
	; completely debugged
	BinaryWrite( editbuf, "SYSTEM.TST")
	;
	; Close binary buffers
	:AlreadyDone
	BinaryFree(editbuf)
	BinaryFree(srcbuf)   

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Article ID:   W12738

Filename:   System.Ini and Device lines.txt

File Created: 1999:04:15:16:49:18

Last Updated: 1999:04:15:16:49:18