WinForms: DataObject malfunction

[cyanfish]

Setting data on an Eto DataObject has no apparent effect - subsequent gets return null. This applies to all methods (SetString, SetObject, SetData, etc.).

var x = new Eto.Forms.DataObject();
x.SetString("data", "type");
Console.WriteLine(x.GetString("type")); // null

This seems related to 1b32e67 which creates a custom internal data object in the default constructor.

Creating with a normal data object works as expected:

var x = new DataObject(new DataObjectHandler(new System.Windows.Forms.DataObject()));
x.SetString("data", "type");
Console.WriteLine(x.GetString("type")); // "data"

Specifications

• Version: 2.5.10
• Platform(s): WinForms
• Operating System(s): Win10

[cyanfish]

Also, is the "shell drag and drop" documented anywhere? I'm not sure the point of it, it seems like I also need to set WindowsControl.UseShellDropManager to false in order for drag-and-drop to work.

[cwensley]

The shell drag and drop is used so you can have drag images and have a tooltip like how the File Explorer drag/drop works.

Thanks for reporting the issue! What control(s) are you dragging/dropping with where it doesn't work?

[cyanfish]

I had drag implemented on items in a embedded control (System.Windows.Forms.ListView). I guess that might not be supported with the shell drag and drop?

[cyanfish]

But in any case, there still seems to be the issue with the data object (I wanted to use the Eto version for unified Clipboard/drag-and-drop handling). Though I can work around that with creating the handler manually if needed.

[cwensley]

Hm, yeah that might not be working.. but it should be compatible with standard drag/drop so it's probably a bug.

As for the original issue that can certainly be fixed.