How to extend WPF hit testing zone for a Path object.

Posted by user275587 on Stack Overflow See other posts from Stack Overflow or by user275587
Published on 2010-04-15T01:06:34Z Indexed on 2010/04/15 1:13 UTC
Read the original article Hit count: 453

Filed under:

wpf

|

path

|

hit

|

testing

|

canvas

Wpf hit testing is pretty good but the only method I found to extend the hit zone is to put a transparent padding area around your object. I can't find any method to add a transparent area arround a Path object. The path is very thin and I would like to enable hit testing if the user clicks near the path. I can't find any method to extend the path object with a transparent area like the image below : alt text

I tried to used a partially transparent stroke brush but I ran into the problem described here : http://stackoverflow.com/questions/1412833/how-can-i-draw-a-soft-line-in-wpf-presumably-using-a-lineargradientbrush

I also tried to put an adorner over my line but because of WPF anti-aliasing algorithms, the position is way off when I zoom in my canvas and interfere with other objects hit-testing in a bad way.

Any suggestion to extend the hit testing zone would be highly appreciated.

Thanks, Kumar

© Stack Overflow or respective owner

Related posts about wpf

C#/WPF - RoutedEvent in WPF class that isn't a UIElement

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a class that needs to notify that something significant has occured. The class is in a WPF-project, even though this specific class, is lookless (and doesn't inherit from UIElement, neither directly or indirectly). Normally, I just register a RoutedEvent to get this functionality but as this… >>> More
How to pass value from wpf form to wpf user control

as seen on Stack Overflow - Search for 'Stack Overflow'
Hai am having a WPF user control in my WPF Form, when i click my button in my form , i just want to pass some value to the textbox which is in the usercontrol, tell me how to do this. >>> More
WPF opening up exe program within WPF window

as seen on Stack Overflow - Search for 'Stack Overflow'
Not sure if this is possible but is there a way to open up another program like notepad within the container of a WPF window? similiar to that of being able to open a web page using the webbrowser control? Basically I would like to open notepad or other exe but keep it constrained within the WPF… >>> More
Silverlight Commands Hacks: Passing EventArgs as CommandParameter to DelegateCommand triggered by Ev

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
Today I've tried to find a way how to pass EventArgs as CommandParameter to DelegateCommand triggered by EventTrigger. By reverse engineering of default InvokeCommandAction I find that blend team just ignores event args.To resolve this issue I have created my own action for triggering delegate commands… >>> More
Building applications with WPF, MVVM and Prism(aka CAG)

as seen on ASP.net Weblogs - Search for 'ASP.net Weblogs'
In this article I am going to walk through an application using WPF and Prism (aka composite application guidance, CAG) which simulates engaging a taxi (cab). The rules are simple, the app would have3 screens A login screen to authenticate the user An information screen. A screen… >>> More

Related posts about path

get the path of moved directory/file (source path and destination path)

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
When one directory is moved to other destination path, then i want to log the entry of original source path and entry of the path where it moved. any command is already available ? or any other way of doing this task? Ex: D1 = /home/user/Documents/test D2 = /home/user/Documents/Data/test when… >>> More
BASH: Convert absolute path into relative path given a current directory

as seen on Stack Overflow - Search for 'Stack Overflow'
absolute="/foo/bar" current="/foo/baz/foo" # magic relative="../../bar" Can you help me with magic? (Hopefully not too complicated code...) >>> More
Converting a URI path to a relative file system path in .NET

as seen on Stack Overflow - Search for 'Stack Overflow'
How do I convert an absolute or relative URI path (e.g. /foo/bar.txt) to a corresponding relative file system path (e.g. foo\bar.txt)? >>> More
How to read from path in wpf comboboxitem and write into path of binding

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I tried to make up an example to show my problem. My combobox has a list of objects as itemssource. In my example it's a list of Persons. In the combobox i want to show the first name and the last name of the person. But i want to save the last name of the person in the "owner" property of… >>> More
Changing an xcode project Path with lowercase path issue

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a problem with an Xcode project which has a path of "/users/me/blah" with a lowercase 'u'. When I check my other projects (in the General Tab of the Project Info Window the Path starts with a uppercase "Users". This causes a couple of problems. When I try and add an existing file which is… >>> More