Gfx and Win-API

[fsw]

In the code posted above I found a way to change this:

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Frame.Show (Frame, TRUE)

to that:

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Frame.Show (TRUE)

and it works great.

In the Show function I do:

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  DIM that as wxFrame ptr

  'EBX seems to be the end of allocated memory for the structure where this function belongs to 
  ASM mov [that], EBX              ' get value of ebx into the variable
  that =  that - len (wxFrame) - 4 ' - 4 bytes to get to the begin of the wxFrame structure
    ShowWindow ( byval that->wxOBJ , SW_SHOW)

to get the address of the caller structure.
And as I said, it works great.

Now I want get rid of '*' of this piece:

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   Frame  = *wxFrame (0, -1,"Welcome to WX-C...", wxPoint( 0, 0), wxSize( 400, 170), wxDEFAULT_FRAME_STYLE)

and do:

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   Frame  = wxFrame (0, -1,"Welcome to WX-C...", wxPoint( 0, 0), wxSize( 400, 170), wxDEFAULT_FRAME_STYLE)

but for this I declared Frame this way:

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DIM SHARED Frame AS wxFrame ptr

and have to call the show function this way:

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Frame->Show (TRUE)

but it doesn't work.

It seems that somehow the part with EBX doesn't work.
Why?

Where do I think wrong...

[v1ctor]

You can't assume what register will be used, FB register allocator will use any free register, that go in and out the free list in no specific order, making it unpredictable.

[fsw]

:(