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Khryus

Detect dropped files in a window?

4 posts in this topic

Hey, I was thinking if it was possible to detect when a file is dragged inside a window. If so, how would you do that?

(What I want to do is something much like "drag a file in this window to open it")


"The story of a blade is linked in Blood." 

―Yasuo

 

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megablox,

ProgAndy gave me this code a while ago: ;)

#include <Array.au3>
#include <GUIConstantsEx.au3>

Global $gaDropFiles[1], $iDropItem = -1
Global $WM_DROPFILES = 0x233

GUICreate("DropIt", 241, 312, @DesktopWidth / 2 - 160, @DesktopHeight / 2 - 45, -1, 0x00000018); WS_EX_ACCEPTFILES
$FILES_DROPPED = GUICtrlCreateDummy()
GUISetState()
GUIRegisterMsg($WM_DROPFILES, 'WM_DROPFILES_FUNC')


While True
    Switch GUIGetMsg()
        Case $GUI_EVENT_CLOSE
            ExitLoop
        Case $FILES_DROPPED
            $aFiles = $gaDropFiles
            _ArrayDisplay($aFiles)
    EndSwitch
WEnd

Func WM_DROPFILES_FUNC($hWnd, $msgID, $wParam, $lParam)
    Local $nSize, $pFileName
    Local $nAmt = DllCall('shell32.dll', 'int', 'DragQueryFileW', 'hwnd', $wParam, 'int', 0xFFFFFFFF, 'ptr', 0, 'int', 0)
    ReDim $gaDropFiles[$nAmt[0]]
    For $i = 0 To $nAmt[0] - 1
        $nSize = DllCall('shell32.dll', 'int', 'DragQueryFileW', 'hwnd', $wParam, 'int', $i, 'ptr', 0, 'int', 0)
        $nSize = $nSize[0] + 1
        $pFileName = DllStructCreate('wchar[' & $nSize & ']')
        DllCall('shell32.dll', 'int', 'DragQueryFileW', 'hwnd', $wParam, 'int', $i, 'ptr', DllStructGetPtr($pFileName), 'int', $nSize)
        $gaDropFiles[$i] = DllStructGetData($pFileName, 1)
        $pFileName = 0
    Next
    GUICtrlSendToDummy($FILES_DROPPED, $nAmt[0])
EndFunc   ;==>WM_DROPFILES_FUNC

M23


Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind._______My UDFs:

Spoiler

ArrayMultiColSort ---- Sort arrays on multiple columns
ChooseFileFolder ---- Single and multiple selections from specified path treeview listing
Date_Time_Convert -- Easily convert date/time formats, including the language used
ExtMsgBox --------- A highly customisable replacement for MsgBox
GUIExtender -------- Extend and retract multiple sections within a GUI
GUIFrame ---------- Subdivide GUIs into many adjustable frames
GUIListViewEx ------- Insert, delete, move, drag, sort, edit and colour ListView items
GUITreeViewEx ------ Check/clear parent and child checkboxes in a TreeView
Marquee ----------- Scrolling tickertape GUIs
NoFocusLines ------- Remove the dotted focus lines from buttons, sliders, radios and checkboxes
Notify ------------- Small notifications on the edge of the display
Scrollbars ----------Automatically sized scrollbars with a single command
StringSize ---------- Automatically size controls to fit text
Toast -------------- Small GUIs which pop out of the notification area

 

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That's really nice, thanks ;) (also @ ProgAndy)


"The story of a blade is linked in Blood." 

―Yasuo

 

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