GetDLLVersion returning a negative release version

[kihjin]

I'm getting back a negative release value after using GetDLLVersion.

code:


ReadRegStr $0 HKLM Software\Microsoft\.NETFramework InstallRoot

StrCpy $0 "$0\v2.0.50727\System.dll"

GetDllVersion "$0" $R0 $R1

IntOp $R2 $R0 / 0x00010000

IntOp $R3 $R0 & 0x0000FFFF

IntOp $R4 $R1 / 0x00010000

IntOp $R5 $R1 & 0x0000FFFF

MessageBox MB_OK "$R0 $R1 $R2 $R3 $R4 $R5"

IntCmpU $R4 50727 +3

MessageBox MB_OK "Not equal"

Goto +2

MessageBox MB_OK "It's equal!"

The actual version for System.dll is 2.0.50727.42.

After the call to GetDLLVersion,

code:


$R0 = 131072

$R1 = -970522582

$R2 = 2

$R3 = 0

$R4 = -14808

$R5 = 42

Notice that $R4 is negative.

Curiously enough, -14808 is the difference between 2^16-1 (65535) and 50727.

As a sanity test, I included the IntCmpU check. Following that, the "Not equal" messagebox is displayed.

[Anders]

stupid nsis sign extension, try

intop $R4 $R1 >> 16
intop $R4 $R4 & 0xFFFF

[kihjin]

Oh I get it. Perfect.

Thanks Anders.