InstallAware

Hello,

where is an example project which illustrates how to receive string values from Win32 API calls?

Best regards,

Frank

InstallAware 9R2

Dear Frank,

Which API function would you like to call?

Hi,

this is the function GetPrinterDriverDirectory:
http://msdn.microsoft.com/en-us/library ... 85%29.aspx

But it would be great to know a common way to do this.

Best reagrds,

Frank

Dear Frank,

This function (and most other WIN32 functions) returns a bool, not a string.
In such case, it is not possible to receive a string value back from the function because it is passed as a pointer and not returned.

Hello Aviv,

which possibilities are available to get the printer driver directory with InstallAware?

How should be a wrapper function for the api GetPrinterDriverDirectory?

InstallAware don't know a string for return values for functions in c-dlls. What is the common way to retrieve strings?

Frank

Dear Frank,

The solution would be to write a DLL that allocates a string buffer, calls the API function, and returns a pointer to the allocated string buffer.

Hello Aviv,

>... and returns a pointer to the allocated string buffer
And what should do with this pointer to get the allocated string in a InstallAware variable?

Do you have any example for me? This would be a great help.

Best regards,

Frank

You just set the return type to string.

Please provide me with a dll / win32api with a function that returns LPCWSTR and I will create an example for you.

Thanks!

Hi,

i found the solution. Thanks for your help.

Best regards,

Frank

Sure, Frank. You an share it here if you'd like (so other users can learn too!)