DOCUMENT:Q149431 04-AUG-1999 [foxpro] TITLE :PRB: Cannot Find Entry Point (DLL Name) in the DLL PRODUCT :Microsoft FoxPro PROD/VER:3.00 3.00b OPER/SYS: KEYWORDS: ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 6.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When you declare a Win32 DLL, the following error occurs: Cannot find entry point Mydll in the DLL Mydll is the name of the DLL being called. CAUSE ===== This error occurs because all 32-Bit DLL procedure names are case sensitive. RESOLUTION ========== To avoid this error, copy the function name, description, and parameters from the Win32 API function Help file into your Visual FoxPro program file. This documents the function in your code and ensures that the correct case is used. For example, the GetUserName function retrieves the name of the user currently logged onto the system: BOOL GetUserName( LPTSTR lpBuffer,// address of name buffer LPDWORD nSize // address of size of name buffer ); Parameters The lpBuffer parameter points to the buffer receiving the null-terminated string containing the user's logon name. If this buffer is not large enough to contain the entire user name, the function fails. The nSize parameter points to a DWORD that, on input, specifies the maximum size, in characters, of the buffer specified by the lpBuffer parameter. If this buffer is not large enough to contain the entire user name, the function fails. If the function succeeds, it will place the number of characters copied to the buffer into the DWORD to which nSize points. To call the GetUserName DLL in Visual FoxPro, use this command: DECLARE GetUserName in Win32API ; String @mybuffer, Integer @mybuffersize If the same DLL was declared as: DECLARE GetuserName in Win32API ; String @mybuffer, Integer @mybuffersize the following error message would display: Cannot find entry point GetuserName in the DLL. STATUS ====== This behavior is by design. Additional query words: VFoxWin ====================================================================== Keywords : Technology : kbVFPsearch kbAudDeveloper kbVFP300 kbVFP300b kbVFP600 Version : 3.00 3.00b ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 1999.