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/Win/Drag and Drop/Picture Drop
Function:
Required plugins for this example: MBS Win Plugin
You find this example project in your Plugins Download as a Xojo project file within the examples folder: /Win/Drag and Drop/Picture Drop
This example is the version from Sun, 10th Dec 2016.
Project "Picture Drop.rbp"
Class App Inherits Application
Const kEditClear = "&Löschen"
Const kFileQuit = "Beenden"
Const kFileQuitShortcut = ""
End Class
MenuBar MenuBar1
MenuItem FileMenu = "&Ablage"
MenuItem FileQuit = "#App.kFileQuit"
MenuItem EditMenu = "&Bearbeiten"
MenuItem EditUndo = "&Rückgängig"
MenuItem UntitledMenu1 = "-"
MenuItem EditCut = "&Ausschneiden"
MenuItem EditCopy = "&Kopieren"
MenuItem EditPaste = "&Einfügen"
MenuItem EditClear = "#App.kEditClear"
MenuItem UntitledMenu0 = "-"
MenuItem EditSelectAll = "&Alles auswählen"
End MenuBar
Class PictureDropTarget Inherits WindowsDropTargetMBS
EventHandler Function DragEnter(dataObject as WinDataObjectMBS, keystate as integer, x as integer, y as integer, byref effect as integer) As integer // does the dataobject contain data we want? allowed = dataObject.hasPicture if allowed then // allow it effect = DROPEFFECT_COPY else // deny effect = DROPEFFECT_NONE end if Return S_OK End EventHandler
EventHandler Function DragLeave() As integer return S_OK End EventHandler
EventHandler Function DragOver(keystate as integer, x as integer, y as integer, byref effect as integer) As integer if allowed then // allow it effect = DROPEFFECT_COPY else // deny effect = DROPEFFECT_NONE end if Return S_OK End EventHandler
EventHandler Function Drop(dataObject as WinDataObjectMBS, keystate as integer, x as integer, y as integer, byref effect as integer) As integer System.DebugLog "Inside drop event "+str(allowed) if allowed then // allow it effect = DROPEFFECT_COPY PictureDropWindow.Canvas2.Backdrop = dataObject.GetPicture else // deny effect = DROPEFFECT_NONE end if Return S_OK End EventHandler
Property allowed As Boolean
End Class
Class PictureDropWindow Inherits Window
Control StaticText1 Inherits Label
ControlInstance StaticText1 Inherits Label
End Control
Control Canvas2 Inherits Canvas
ControlInstance Canvas2 Inherits Canvas
EventHandler Sub Open() me.Backdrop = new Picture(100,100,32) End EventHandler
End Control
EventHandler Sub Open() w = new PictureDropTarget dim e as integer = w.AttachToWindow(Self) System.DebugLog "AttachToWindow: "+str(e) End EventHandler
Property w As PictureDropTarget
End Class
End Project

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The items on this page are in the following plugins: MBS Win Plugin.




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