mercredi 18 juillet 2012 23:26
WD_CopyPSToString(Byval intWinHdl As Integer, ByVal StartPos As Integer, ByVal strBuffer As String, ByVal intBufferLen As integer) returns an integer. I need this function copy the string on Presentation Space at specific location and saves the string in parameter strBuffer. I allocated strFBuffer with 43 spaces by statement Dim strBuffer As String = Space(43). This function returns a string to strFBuffer successfully in VB6. But It failes in VB.NET. In VB6, the strBuffer is allocated as follows. Dim strBuffer As String * 43. In VB.NET the strBuffer is allocated as follows. Dim strBuffer As Stirng = Space(43). This function was executed successfully in VB6 and VB.NET. bUT srtBuffer got a correct string and strBuffer got nothing in VB.NET. I appreciate all tips and helps in advance. Sorry about typo error and incorrect grammar. "Body" does not allow me to correct errors.
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jeudi 19 juillet 2012 00:31
I suspect the first param is a window handle. Then the type should be IntPtr.
Have a look here how to get a String back from an API function (the GetSystemDircectory example). It uses a Stringbuilder.
mercredi 1 août 2012 21:32I failed to find a solution on this problem even though I spent a lot of time. I skipped this prob. and will be back later.