VB/WinAPI, CreateFile API Return INVALID_HANDLE

CreateFile API Return INVALID_HANDLE_VALUE

Author	Message
ernesto Herrer #1 / 4	CreateFile API Return INVALID_HANDLE_VALUE Hi, I am trying to use this API, and no matter what I do, it always returns -1 or INVALID_HANDLE_VALUE. All I need is a handle to a file, so I can read its attributes, such size an so on. I use the OPEN_EXISTING flag. Does anyone have had any problems with this function? VB6, OS=WIN98 Ernesto
Sat, 30 Nov 2002 03:00:00 GMT

Didier Lefebvr #2 / 4	CreateFile API Return INVALID_HANDLE_VALUE ernesto, Quote: > I am trying to use this API, and no matter what I do, it always returns > -1 or INVALID_HANDLE_VALUE. > All I need is a handle to a file, so I can read its attributes, such > size an so on. I use the OPEN_EXISTING flag. > Does anyone have had any problems with this function? > VB6, OS=WIN98 what about this: hFileHwnd = CreateFile(strFileName, GENERIC_READ, FILE_SHARE_READ Or FILE_SHARE_WRITE, 0, OPEN_ALWAYS, FILE_FLAG_RANDOM_ACCESS, 0) Declares are in win32api.txt -- a+ --- Dier
Sat, 30 Nov 2002 03:00:00 GMT

Mattias Sj?gr #3 / 4	CreateFile API Return INVALID_HANDLE_VALUE Ernesto, Quote: >Does anyone have had any problems with this function? No, nothing that wasn't an error I made myself. Post the code you're using, and hopefully someone can help you find out what's wrong. Mattias ____________________________________________ http://hem.spray.se/mattias.sjogren/
Sat, 30 Nov 2002 03:00:00 GMT

Monte Hanse #4 / 4	CreateFile API Return INVALID_HANDLE_VALUE Ditto, Mattias; must be user error. If you got the declare from the API Viewer then it includes the SECURITY_ATTRIBUTES parameter, which must be supplied with live data, or you can change it to As Long or As Any and pass it 'ByVal 0&'. Also, check err.LastDllError, is it 87? ----------------------------------- Monte Hansen http://KillerVB.com Please respond to the newsgroups ----------------------------------- Quote: > Hi, > I am trying to use this API, and no matter what I do, it always returns > -1 or INVALID_HANDLE_VALUE. > All I need is a handle to a file, so I can read its attributes, such > size an so on. I use the OPEN_EXISTING flag. > Does anyone have had any problems with this function? > VB6, OS=WIN98 > Ernesto
Sat, 30 Nov 2002 03:00:00 GMT

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