PRB: Error Message Cannot Load 32-bit DLL

 Last reviewed: March 7, 1997
Article ID: Q164742
The information in this article applies to:
  • Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0

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

Keywords : FxprgFoxtools FxtoolLck kbprg kbtool vfoxwin
Version : 3.0 3.0b 5.0
Platform : WINDOWS
Issue type : kbprb

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Last reviewed: March 7, 1997
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