How to resize the form with Border style is none

[dass]

I want to allow the user to resize the form width only
But form's border style is none

 

[wgcs]

Change the Form's border style to Sizeable... then, Set the form's properties MaxHeight and MinHeight to the same value... the Height you want to enforce.

It's a real pain to implement resizing on your own... it tends to be iffy because the form doesn't always capture mouse movements if the user happens to get the mouse to skip out of the form while dragging... it's best to just use the sizeable border.