Newbie, How to know which ctrl the files was dropped onto

[squadjot]

Hi, i'd like to create a GUI with multiple "dropzones" (labels) ,

The basics are working fine,
- but how do i find out which label the files was dropped on to?

My script goes something like this

Global $__DropFiles
Global $hGUI = GUICreate('DragNDrop', 550, 550, -1, -1, -1, $WS_EX_ACCEPTFILES)

Global $dropZone1 = GUICtrlCreateLabel("", 0, 0, 150, 150)
GUICtrlSetBkColor(-1, $COLOR_RED)
GUICtrlSetResizing(-1, $GUI_DOCKALL)
GUICtrlSetState(-1, $GUI_DROPACCEPTED)

Global $dropZone2 = GUICtrlCreateLabel("", 160, 0, 150, 150)
GUICtrlSetBkColor(-1, $COLOR_BLUE)
GUICtrlSetResizing(-1, $GUI_DOCKALL)
GUICtrlSetState(-1, $GUI_DROPACCEPTED)

GUIRegisterMsg($WM_DROPFILES, "WM_DROPFILES")
GUISetState(@SW_SHOW, $hGUI)

Func WM_DROPFILES($hWnd, $iMsg, $iwParam, $ilParam)
    #forceref $hWnd, $iMsg, $ilParam
   
 
 Local $aError[1] = [0], $aReturn
    Switch $iMsg
        Case $WM_DROPFILES
            $aReturn = _WinAPI_DragQueryFileEx($iwParam)
            If IsArray($aReturn) Then
                $__DropFiles = $aReturn
            Else
                $__DropFiles = $aError
    EndIf
   ; _WinAPI_DragFinish($iwParam)
    EndSwitch
    Return $GUI_RUNDEFMSG
EndFunc   ;==>WM_DROPFILES







Edited August 12, 2014 by squadjot

[BrewManNH]

From the help file:

 

If $GUI_DROPACCEPTED (8) is set to a visible control a drag & drop can be taken in account. The edit/input control will be set with the filename.
For other controls on reception of $GUI_EVENT_DROPPED, @GUI_DragId will return the controlID from where the drag start (-1 if from a file, @GUI_DragFile contain the filename being dropped) and @GUI_DropId returns the controlID of the dropped control.

Edited August 12, 2014 by BrewManNH

[squadjot]

Ahh, @GUI_DropId was what i needed - thanks a bunch!

Just a side question while trying to make a solution (trying to learn)

Any reason why this would not work? (Abstract)

(To clarify a bit, the problem is that $cPos = ControlGetPos , does not end up as an array)

Global $dropZone1 = GUICtrlCreateLabel("", 0, 0, 150, 150)
GUICtrlSetBkColor(-1, $COLOR_RED)
GUICtrlSetResizing(-1, $GUI_DOCKALL)
GUICtrlSetState(-1, $GUI_DROPACCEPTED)

test()

Func test()
 $wasOver = isMouseOver($dropZone1)
EndFunc

Func isMouseOver($ctrlRef)
   Local $mp = MouseGetPos()
   Local $cPos = ControlGetPos("","",$ctrlRef)
   Local $res = False
   if(IsArray($cPos)) Then
      if($mp[0] < $cPos[0]+$cPos[2] And $mp[1] < $cPos[2]+$cPos[3] And $mp[0] > $cPos[0] And $mp[1] > $cPos[1] ) Then
         $res = True
      Else
      EndIf
   Else
      ; not array
   EndIf
   return $res   
EndFunc

Edited August 12, 2014 by squadjot

[BrewManNH]

Can you post a script that can be tested instead of a piece of it? Without knowing exactly how you're calling the test function, it's impossible to tell why controlgetpos doesn't work as expected.

[squadjot]

Yeah i know it's not "runnable".. but it's more or less it.. The only change was that i was making the isMouseOver($dropZone1) call  from inside WM_DROPFILES.

I checked that the parameter $ctrlRef is the integer of the guictrl.. 

Anyways, i'll see if i can post a more complete example.  thanks for your help so far!