DIALOG SHOW using CodePtr (feature req)

[Steven Pringels 3 Member Find all posts View Profile Close Steven Pringels 3]

Hi,

In an attempt to create an OO version of the DDT set, I stumbled on the first
problem. The DDT command DIALOG SHOW doesn't allow for a codeptr to be
used.

Therefore, could I ask for a feature request: add the possibility to use
code a codeptr as a callback mechanism with DDT.

Thank you

Steven

[Michael Mattias Member Find all posts View Profile Close Michael Mattias]

Even CODEPTR is not going to work if your OO functions are in a DLL, as DDT functions are only valid in the module in which the dialog is created.

(Which is I think why "DIALOG SHOW... CALL DWORD procaddress" is NOT supported).

BUt I may have a workable method for you....

You COULD use CODEPTRs by using the SDK-Style dialog creation functions DialogBoxIndirect[Param] and CreateDialogIndirect[Param] in your functions. (FWIW, this how "DDT" syntax is handled by the compiler).

Just convert your "DIALOG NEW" and CONTROL ADD" functions to entries in the DLGTEMPLATE and DLGITEMTEMPLATE structures used by these functions.

(OK, so using "just" in that sentence over-simplifies it. Although "doable" it will not be quick and easy)

MCM

[Steven Pringels 3 Member Find all posts View Profile Close Steven Pringels 3]

Thanks Michael,

Didn't know about that the same module approach. But I think you're right about why Call Dword is not supported.

Cheers

Steven

[Michael Mattias Member Find all posts View Profile Close Michael Mattias]

DDT giveth - DIALOG NEW and CONTROL ADD are certainly easier to master than DialogBoxIndirect - and DDT taketh away - although in this case I think "There's no such thing as a free lunch " might just be 'spot-on.'