Graphics in DLL

[skaner1900]

How to use Graphics in DLL?
When I added 'Graphics'* to uses section I received that error:
NameOfDLL.lpr(1,1) Fatal: Can't find unit Graphics used by NameOfDLL

*Graphics, or Controls, or some else

When I copied all graphic.* files from Lazarus directory, to my Library dir, I saw similar error 'Can't find unit [sth name] used by Graphic'.

[Laksen]

You shouldn't move the files. They are all there

You need to add a dependency on the LCL to the DLL project. That way Lazarus will automatically tell the compiler where to find any required units, and resolve versions correctly

[skaner1900]

Easy
but now are appearing a new problems...

NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterCustomImageList
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterMenuItem
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterMenu
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterMainMenu
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterPopupMenu
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterDragImageList
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterControl
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterWinControl
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterGraphicControl
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterCustomControl
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterScrollingWinControl
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterScrollBox
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterCustomFrame
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterCustomForm
NameOfDLL.lpr(52,1) Error: Undefined symbol: WSRegisterHintWindow
NameOfDLL.lpr(52,1) Fatal: There were 15 errors compiling module, stopping

What's going on?

[Laksen]

You must add "Interfaces" in the uses clause of the main library file. This includes the actual widgetset code required