hello,
trying to write an installer that finds the version number of an already installed program(no entry in registry)kind of like installing a plugin to that version..Basically what ive been doing is starting at version 9.9.9 and going backwards from there manually, not using variables and math ala..
;*************************459****************************
; TESTS FOR Program 459
IfFileExists "$APPDATA\PROG\${PROG_VERS_459}\*.*" 0 no459
SetOutPath "$APPDATA\PROG\${PROG_VERS_459}\UserPresets"
;Call AddFiles
Goto endINSTALL
no459:
;*************************458****************************
; TESTS FOR Program 458
IfFileExists "$APPDATA\PROG\${PROG_VERS_458}\*.*" 0 no458
SetOutPath "$APPDATA\PROG\${PROG_VERS_458}\UserPresets"
;Call AddFiles
Goto endINSTALL
no458:
;*************************457****************************
; TESTS FOR Program 457
IfFileExists "$APPDATA\PROG\${PROG_VERS_457}\*.*" 0 no457
SetOutPath "$APPDATA\PROG\${PROG_VERS_457}\UserPresets"
;Call AddFiles
Goto endINSTALL
no457:
.........
well you get the idea. In C i would assign each version number to 3 ints and subtract but i cant figure out how to do it with the NSIS script system. ive looked a little at the math library but havent seen simple addition and subtraction...help would be greatly appreciated....
thanks
mike
version finder
4 posts