3 replies to this topic

[gsh100]

I'm having trouble with Installshield professional 6 when running my own DLL.

The DLL function is defined like:

__declspec(dllexport) int doStuff( HANDLE hWnd, char *string)

and I call it from the script by the following:

prototype INT myDll.doStuff(HWND, BYREF STRING);

export prototype stuff_Installed();
function stuff_Installed()
 STRING string;
 BOOL Result;
begin    
 Result = UseDLL("myDll");
 if(Result < 0) then
   SprintfBox(SEVERE, "FAILED", "FAILED");
 endif;  
 
 string = "Hello World";
 Result = doStuff(GetWindowHandle(HWND_INSTALL), string);
 if( Result != 0 )then
   SprintfBox(SEVERE, "FAIL", "FAIL");
 endif;                                                    
 
 SprintfBox(SEVERE, "PASS", "PASS");
end;

No matter what I do the code doesn't seem to return to the script, instead the installer just continues with the rest of the installation, i.e. neiither of the two SprintfBox'es are output...

I've seen similar errors in calling the DLL if you get the parameters wrong, but I'm sure they're right!

Any ideas?

[Stefan Krueger]

Moving this question to the Professional 6 forum

[Stefan Krueger]

First make sure your script compiles with 0 errors, and build a new media.
If that doesn't help use the debugger to see whether your function gets called, or why not.
Also you should make sure your exported DLL function name is not mangled, and you should specify the calling convention in your InstallScript prototype.

[jiekang007]

Add extern "C" before the following line:
declspec(dllexport) int doStuff( HANDLE hWnd, char *string)

See if it works.