C# - how do I prevent mousewheel-scrolling in my combobox?

Question

I have a combobox and I want to prevent the user from scrolling through the items with the mousewheel.

Is there an easy way to do that?

(C#, VS2008)

Answer 1

I use another solution that also works on Mono.

Goal is to prevent accidentally scrolling (that is when the user is not looking at the comboBox when using the mouse wheel). If he / she scroll outside the visible portion of comboBox , the combo box should not scroll, otherwise it should.

My solution:

• Place a read only text box outside the visible portion of the screen. In form_load I placed the line: hiddenTextbox.left = -100 ;

• Set the focus to this text box when the mouse leaves the combo box using mouse leave event. In comboBox1_MouseLeave I placed the line: hiddenTextbox.focus();

• Handle mouseWheel event: From1.MouseWheel += Form1_MouseWheel; textBoxHidden.MouseWheel += Form1_MouseWheel;