How to make a window Draggable(C# Winforms)?

Question

I have form. I have enabled the transparency on the form and I have removed it's Title Bar and Border. Inside that i have created a Custom UI, Which have the same features like a window. Basically, my idea is to create custom window.

Everything is working as expected but only the windows dragging is not working. I am not sure how to enable it. I googled for this. But i didn't find any useful info for me.

Please help me to implement this window dragging.

Answer 1

I've implemented this behavior by capturing mousedown (uncapture on mouseup), and then mousemove.

Just move the form co-ordinates (left, top), equivalent amounts to the mouse movement (those events have the amount the mouse moved).

This worked fine for me.

Answer 2

The easiest way is to process WM_NCHITTEST message and return HTCAPTION for the portions of your custom window which work like the title bar does in a normal window. Windows will do the rest.