InstallAware

Hello,
I search to use a dll function (c++) for crypt a string.
The prototype of this function:
void Crypt(const char *StrToCrypt,const char *key,char *cryptedStr,int &length_out)

cryptedStr and length_out, are initialized by function.

In my installAware script I use this line for call the previous function


So:
--> my dll function is called without problem but $CRYPTED$ and $LENGTHOUT$ are not initialized.
--> my dll function receive correctly $TOCRYPT$ and $CRYPTKEY$ variable

I tested to change $CRYPTKEY$ to "pointer to string" but this not fix my problem

You know how to solve this problem ?

Thanks in advance for your help

Dear User,

I don't know in which way you are actually handling those parameters with your function, but very probably, I believe exist a problem with that in your code.

The string pointer passed by InstallAware is allocated to a fixed size (MAX_PATH = 260) and this means, that your function should take the passed parameter for "int &length_out" as maximum number of characters (including null terminator) to be copied to the destination string.

In this case the maximum allowed characters is fixed to 260 (MAX_PATH) and this should be passed as fixed value to your function.

I suggest you to have a look at the following topic, where I describe with a sample IA script, how to handle a call to "GetVolumeInformationA" WIN API function.
http://www.installaware.com/forum/viewtopic.php?f=2&t=8958

Regards

Ok, I tried with minimal function

C++




The messageBox is displayed but $LENGTHOUT$ is not changed to 42

I don't understand why !

EDIT: I found !!!!!
I deleted "Return result in variable: RESULT" and, it works !!!!!!!!!!!!! (I use NX version)

Happy you solved !!!