Reading Structure Argument

[LuaDev]

Hi guys, here i go with another stupid question

im making a plugin for another development platform and the SDK requires that i export some functions, all is well for the most part, but.....

i have this function that passes a structure as a argument (not a pointer to the structure)

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EXPORT void _DrawDesign(long ClassID ,HDC hDC, HWND hMainWnd, RECT rcObRect, BOOL bVisible, BOOL bEnabled)

how on earth do i access the values of this structure ?, everything i try either fails or crashes the IDE

[IceSoft]

Wich SDK?

[ts-soft]

I think:

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Structure rcObRect
  bla.i
  ;...
EndStructure

Define bla.rcObRect

_DrawDesign(ClassID, hDC, hMainWnd, @bla, #True, #True)

Debug bla\bla

[LuaDev]

Wich SDK?

the SDK is for AutoPlay Media Studio, but it requires you fill a C++ class (which cant be done in PB?) so a friend of mine wrote a wrapper (or proxy) dll that fills the class by calling functions from my dll

I think:

you misunderstand, that function must be defined in my dll and the proxy dll calls the function defined in my code and sends the RECT structure, i need to access the struct to get the dimensions of the host container to draw my object

i should have explained all this first to avoid confusion

[LuaDev]

nm, i got there in the end

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*ptr.RECT = @*rcObRect

[Trond]

Are you sure you can access the last two parameters with your solution?

[LuaDev]

no i cant, didn't try till today and got all sorts of weird problems, back to the drawing board then i guess

[Trond]

Maybe this works:

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Procedure _DrawDesign(ClassID, hDC, hMainWnd, left, top, right, bottom, bVisible, Enabled)

[LuaDev]

yea, that seems to work ok, thanks

how did that happen, was the structure expanded somehow?

[Demivec]

yea, that seems to work ok, thanks

how did that happen, was the structure expanded somehow?

The values of the structure are being pushed onto a parameter stack. The structure appears as a collection of (4) 4-byte integers. This would be the same as pushing 4 separate 4-byte integers. The sizes need to match properly for this to work.