file_dragger

Quick links: itch.io
Versions: GameMaker 2022+..?
Platforms: Windows, Windows (YYC)

Company for file_dropper, this extension allows you to drag files out of the game window.

Featuring a total of 2 (two!) functions:

file_drag_drop(path, ...paths)➜

Starts a drag-and-drop operation for one or more files with the given (absolute!) paths.

Returns whether successful.

Should be called when the primary mouse button is pressed (e.g. mouse_check_button_pressed(mb_left)).

file_drag_drop_array(paths)

Like above, but takes an array of paths instead.

What's interesting here

This was supposed to be one of those tiny C++ DLLs but it takes quite a lot of boilerplate to implement a draggable IDataObject and I couldn't get it to consistently work with various places that you might drag a file to.

So I have settled for a C# approach (someone found out what Windows itself uses), but:

1. This is a bit of a hack
   You're supposed to use WinForms drag-and-drop with WinForms components, but GameMaker window isn't one, so I'm hiding a WinForms window inside the game window.
2. It doesn't work in GameMaker: Studio for some reason.
   There are no errors or anything, it just returns as if the user did a short click without dragging.

I decided not to take any more time (and money of the person that wanted this extension) to flop about with potentially no results, so this is as far as I'll be going with this.

If you have time to spare, you can investigate the following: 1 2

Meta

Author: YellowAfterlife
License: MIT