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Failed to create a form in a window

Martinsh

I'd like to create a form in a window. The form has two combo Field. One is a library comboField and the other is a cell comboField. The two fields are linked by ddHiLinkFields() function.  Before use ddHiLinkFields() function, the form must be instantiated. The instantiation action will cause failure when create the form window. Please refer following code. How to solve this problem?


let((fromLib fromCell formLayout1 win)

fromLib = ddHiCreateLibraryComboField(?name 'fromLib ?callback "ddsUpdateSyncWithForm" ?value "" ?prompt "Library")
fromCell = ddHiCreateCellComboField(?name 'fromCell ?callback "" ?value "" ?prompt "Cell")


formLayout1 = hiCreateFormLayout(
'formLayout1
?items list(fromLib fromCell )
?frame "From"
)


Form1 = hiCreateLayoutForm(
'Form1
"Form1"
formLayout1
?buttonLayout 'OKCancelDef
?unmapAfterCB t
?minSize 400:300
)


hiInstantiateForm(Form1)
ddHiLinkFields(Form1->fromLib Form1->fromCell)

;hiDisplayForm('Form1)
win = hiCreateWindow(
nil
"form"
""
""
nil
Form1
)

hiDisplayWindow(win)
)

  • Comment out the hiInstantiateForm (which only works with non-window forms) and move the ddHiLinkFields call to after the hiDisplayWindow call. The form will have been "instantiated" by then, and the linked fields then work correctly. The hiDisplayWindow is non-blocking, so this will work (I tried it).

    Andrew

  • in reply to Andrew Beckett

    Andrew,

    Thanks! That works well.

    Martinsh

  • in reply to Andrew Beckett

    Hi, Andrew,

    If the form is created in a window, the function hiGetCurrentForm() can't get the form correctly. In following code, I'd like to pass the form handle as an argument of function funcLoad(), but failed. How to fix this problem?

    btnLoad = hiCreateButton(?name 'btnLoad
    ?callback "funcLoad(hiGetCurrentForm())"
    ?buttonText "Load"
    )

  • in reply to Martinsh

    Martinsh,

    The clunky way of doing this is:

    ?callback "funcLoad(symeval(hiGetCurrentWindow()->hiForm))"

    A cleaner way is to use function object callbacks - if your callback function just has the single argument form, then you could do:

    ?callback lambda((_field form) funcLoad(form))

    (this creates an anonymous function with two arguments, and then calls your real function). This works with both normal and window forms. 

    Or you could change your callback function definition:

    procedure(funcLoad(field form @rest _others)
    ...
    )

    and then you can call:

    ?callback 'funcLoad

    (if it was in SKILL++ you don't need to give the single quote).

    Andrew.

  • in reply to Andrew Beckett

    Andrew,

    Thanks for the ways you've given. All work well.

    Martinsh

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