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Questions tagged [idataobject]

26 questions
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3 answers

How to perform a deep copy of an object not marked as serializable (in C#)?

I am attempting to create a Clipboard stack in C#. Clipboard data is stored in System.Windows.Forms.DataObject objects. I wanted to store each clipboard entry (IDataObject) directly in a Generic list. Due to the way Bitmaps (seem to be) stored I am…
cgray4
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2 answers

IDataObject.GetData() always returns null with my class

I have a class which I marked as [Serializable] that I'm trying to copy through the clipboard. Calling GetData() always returns null. Copy code: IDataObject dataObject = new DataObject(); dataObject.SetData("MyClass", false,…
Trevor Elliott
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1 answer

How can I create a IDataObject instance with Delphi?

This C++ code shows how OLE can be used to simulate a file drag and drop to simulate a 'Send to...' operation. This will open the standard mail client with the selected file(s) as an attachment, a very interesting alternative to the mailto:…
mjn
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1 answer

File/Folder right-click 'Copy' action, how does it copy to clipboard?

I'm making an app that has some functionality of windows explorer. Actually I have to make a copy/paste actions. My question is what does windows copy to clipboard, when I'm right-clicking the file and the choose 'Copy'? Here's my Paste code: var…
GaaRa
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1 answer

VirtualFileDataObject implementation does not work for Outlook 365

I have followed the example found here. It implements the IDataObject interface to create a "virtual file" dataobject. The implementation works perfectly well when d/d the virtual files from a WPF application to the file system and outlook emails…
EPR
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1 answer

how can i add (append) custom format to clipboard

I try to create a clipboard monitor program, i need to detect when data set from my app and then i can ignore them, for this work i try to add custome format to clipboard so first of all register new format with this code : int iii =…
MrUnknow
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1 answer

How to copy IDataObject value to another IDataObject?

I want go get value from 'd' IDataObject to 'c' IDataObject in C# but my 'c' possess value from my Clipboard even when i won't click D key. How can I give independent value from one IDataObject to second? First function: if…
Dawid SoChii Sokół
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1 answer

Drag and Drop from Outlook into Winforms

When dragging items from Outlook email into a Winforms app (Control is a GalleryControl by DevExpress, the DragDrop event is not firing, even though i manually set 'DragDropEffects.Move` in the DragEnter event handler. (have confirmed that this is…
Brendan Gooden
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How can I determine the source process/hWnd for a Drag and Drop operation from drop target

My C# Windows application accepts drag operations, and I'd like to be able to identify the hWnd and/or Process ID of the source. Is this possible, and how would I go about determining it? I've tried getting the active window when the drag-over…
ThunderFrame
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Drag and Drop From HTML pages to C++ applications

I am trying to implement Drag And Drop Functionality from Web Pages to C++ Applications. I am setting text on drag to dataTransfer object and now trying to access it on DropTarget from IDataObject. To Get Data from IDataObject, we need to specify…
Kailas
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1 answer

Retrieving filename from IDataObject in Delphi

I'm building a Delphi XE3 application which needs to be able to have files dropped onto it. I have the Explorer > Application side of things working, but for the life of me can't figure out to get the filename when going from Application >…
Ranky
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1 answer

Using a subclassed DataObject as Clipboard DataObject

When I try the following the results are unexpected. Any ideas will be most appreciated! Class DataObjectSub Inherits DataObject End Class Sub Test() Dim myObject = New DataObjectSub myObject.SetData("Test") …
cak
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1 answer

Getting multiple Outlook attachments from the clipboard

I'm trying to get multiple Outlook attachments from the clipboard. When a user chooses multiple attachments and places them in the clipboard (or drag them), an IDataObject is being created and is being placed in the clipboard. I know that the file…
TCS
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1 answer

OleClipboard and IDataObject under local SYSTEM account

There is an implementation of remote file transfer via dragging virtual files using IStream/IDataObject (based on Raymond Chen's blog topic: What a drag: Dragging a virtual file (IStream edition)). Basically, it works good. But if the application is…
lfk
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1 answer

C# Clipboard and DataObject not behaving as expected

I'm trying to use the Clipboard to store selected objects in a program I've written, for the purposes of copy and paste (obviously). My copy code is: DataObject oWrapper; Clipboard.Clear(); oWrapper = new…
Mark Roworth
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