Hello,

I have now KDE 4.5.2 and I cannot find the option where I can increase the size of a window edge. I've looked into a couple of places in System Settings:
- Application Appearance
- Desktop effects
- Workspace appearance
- Window behaviour
- Workspace
and nothing seems to have that option, does anyone know where I can do it?

Or maybe there is another way to increase the sensitivity of a mouse cursor, when I want to resize a window? Grabbing by the edges seems to be really annoying and doesn't seem to be easy, sometime the cursor doesn't even change to the "reszie" type, I have to somehow click on the window to activate it.

Thanks,
Richard

System Settings -> (Workspace Appearance and Behavior ->) Workspace Appearance -> (Window Decorations ->) Configure Decorations... -> Border size.

Note that only some decorations support this, such as the default Oxygen decoration.

If you want to be able to resize a window more easily, I suggest to change Alt + right click to resize. That way you just hold down Alt and drag with the right mouse button pressed pretty much anywhere in a window. You can change this in System Settings -> (Workspace Appearance and Behavior ->) Window Behavior -> Window Behavior -> Window Actions -> Inner Window, Titlebar & Frame -> Right button: Resize.

Grabbing by the edges seems to be really annoying and doesn't seem to be easy, sometime the cursor doesn't even change to the "reszie" type, I have to somehow click on the window to activate it.

Can't reproduce here.

Thank you very much, that was very quick, I hardly managed to blink
This Alt + resize function is really cool... and works.
I managed to resize my borders. I missed the "Configure" button at the bottom.

You're welcome - I take it that you're satisfied with the answer? In that case it would be nice if you could mark the topic as solved, as described in this topic.

Changing the border size to tiny removes the ability to resize the window from the left/right/bottom edges, but is there a way to remove or change the size of the title bar resize edge? I keep accidentally resizing the window while trying to move it, and I don't really need or use that ability at all since I can just use meta+right click to resize the window.

You can similarly use alt+left click-and-drag to move windows around; and you can also configure the widget style to allow moving the window by (no modifier) left-click-and-drag on the background of the window. For the Oxygen style, open oxygen-settings (separately from systemsettings) In the general tab there's an option for Windows' drag mode.