>Sergey,
>It should return 122 and I suppose it is designed to return 122 so you can call it again with correct parameters but the point is that EnumForms is returning 0 for failure and GetLastError is returning 0 not 122 as it should. What is going on? In addition when EnumForms is called again vfp goes byebye.
I just ran following code on my PC and got error 122. Win2k, VFP 6 SP5

bNeeded=0
nForms=0
nSize=0
nBuffSize=0
lnStructure = 0
lnOk = WS_EnumForms(lnHandle, 1 , lnStructure , nSize, @bNeeded , @nForms )

The second call to WS_EnumForms with lnStructure and nSize populated killed VFP.