PRB: Error Message Cannot Load 32-bit DLL

ID: Q164742

The information in this article applies to:

Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 6.0

SYMPTOMS

The following error occurs when you attempt to call a function in a 16-bit DLL that has been registered with the DECLARE-DLL command:

Cannot load 32-bit DLL <path to DLL>

It may also seem to happen in calling the RegFn() function in FoxTools, if the incorrect syntax is used, after having registered the function with the DECLARE-DLL command.

STATUS

This behavior is by design. The DECLARE-DLL command should only be used to register 32-bit DLL functions in FoxPro. To register a function of a 16- bit DLL, use the RegFn function of the FoxTools.FLL library.

MORE INFORMATION

Steps to Reproduce Behavior

The following steps are for illustration purposes only -- the DLL in the example does not exist.

Type the following commands in the command window: DECLARE INTEGER TestFn IN Test16.dll INTEGER,INTEGER *** The error will occur on executing the next line of code ? TestFn(1,1) *** Removing the asterisk on the next line would resolve the error *** that occurs on the first RegFn() call below. * CLEAR DLLS SET LIBRARY TO HOME()+"FoxTools.FLL" *** The error will occur on executing the next line of code *** because it is attempting to call the TestFn() function registered *** above with the DECLARE-DLL command handle = RegFn(TestFn(),"II","I","Test16.DLL") * The correct way to register the function is... handle = RegFn("TestFn","II","I","Test16.DLL") ReturnValue = CallFn(handle, 1, 1) && Note this works now

Additional query words:

Keywords : kbprg kbtool kbVFp kbVFp300 kbVFp300b kbVFp500 kbVFp600 FxprgFoxtools FxtoolLck
Version : 3.0 3.0b 5.0 6.0
Platform : WINDOWS
Issue type : kbprb