Dif. between Kernel32 and Win32API

[mkendi]

Difference between Kernel32 and Win32API

I was trying to implement faq184-1767 (How to stop users running my app twice); but I get the error message "cannot find entry point SHOWWINDOW in DLL" when I reach the declaration.
Then I changed the decralation from
DECLARE LONG SHOWWINDOW IN Win32API LONG, LONG
to
DECLARE LONG SHOWWINDOW IN Kernel32 LONG, LONG
Now I am able to pass the declaration.
But as soon as I start a 2th instance of my program, again I am able to pass the declaration but get the message "cannot find entry point SHOWWINDOW in DLL" as soon as I try to call the function ShowWindow().
So what's the point here?

PS: I'm using W2k SP4

Thanks in advance

 

[ChrisRChamberlain]

mkendi

WinAPI calls are case sensitive, hence the error.

Suggest you copy and paste the code in the FAQ.

FAQ184-2483 - answering getting answered.​

Chris
PDFcommander^tm.net
PDFcommander^tm.co.uk

 

[mkendi]

Hi Chris!
Indeed, you are right. My problem is:
ShowWindow seems to be a Vfp KeyWord, and in my 'Beautify ..' I am changing all Vfp KeyWords to Uppercase.

Thanks a lot!

 

[wgcs]

BTW: the difference between Kernel32 and Win32Api is that when you specify "Win32Api", VFP searches all the standard API .DLLs: (according to VFP help) <i>If you specify WIN32API for the LibraryName, Visual FoxPro searches for the 32-bit Windows .dll function in Kernel32.dll, Gdi32.dll, User32.dll, Mpr.dll, and Advapi32.dll. </i>

If you specify Kernel32, vfp only looks in that dll: kernel32.dll

Either way, the procedure name is case sensitive.



- Bill

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