WPF Touch DragMove()

Question

0.00/5 (No votes)

See more:

Hi All.

I have a Windows 8 Desktop App which has a WPF Window without chrome (i.e. WindowStyle="None") and I want to be able to drag it around the screen by touch not mouse.

With the mouse I would use DragMove() in a mouseDown event handler (or similar) and the magic would happen.

This doesn't work with touch as the exception "Can only call DragMove when primary mouse button is down" is thrown.

I tried handling ManipulationDelta and 'manually' moving the window by the delta amount - which 'sort of' works. the problem with this is that, having moved the window, the touch handlers send back a -ve movement to 'compensate for the change in position of the window - so the window vibrates madly as it's position is moved by +8 then -8...

It strikes me that this is something someone wold have solved before me - but I can't find a working solution in all of the interwebs (or perhaps my googling skillz are just blown!)

Anyone offer any advice (or a working example app ;)

Posted 16-Oct-13 3:14am

_Maxxx_

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

gourav8524 · Answer 1 · 2014-09-12T02:00:00

Solution 1

I had the same issue try the following

C#

private void Window_PreviewTouchDown(object sender, TouchEventArgs e)
       {
          
               this.CaptureTouch(e.TouchDevice);
         
       }

Posted 12-Sep-14 2:00am

gourav8524