Hi Haim,
Currently there seems to be no option to switch between fixed-size and resizable window styles in Peter's modules. Nor is there such an option provided at window creation time.
Peter has two versions of precompiled DLL's, one for resizable windows, and the other one, for fixed. Each time he supplies his submissions with a corresponding DLL.
I think Peter could use calls to
SetWindowLong hWnd, GWL_STYLE, &H14CF0000 ' resizable
and
SetWindowLong hWnd, GWL_STYLE, &H14CA0000 ' fixed-size
to change the styles once his main window is created. He could add a WinStyle RESIZABLE | FIXED function to his DLL too to let the user decide which style they want for their code if they use his DLL.
But there is practically no chance for that. Peter hates other people's advice and mine in particular, therefore you will have to continue switching the two DLL's to the day you die.