Hi there,

when I press 'Ctrl' + '無変換'   on Japanese keyboard, I can switch between tabs. what I want is to disable these key combination.

when I tried to find out which key code belongs to this special key by debugging KeyDown event, I found when I pressed '無変換' alone the e.KeyCode equals to 'Keys.None', when I pressed 'Ctrl'  + '無変換' together, e.Control equals true, and e.KeyCode equals to LButton | ShiftKey

I also tried ProcessCmdKey event of the Form, when I pressed 'Ctrl' + '無変換', it will go throuth ProcessCmdKey event twice, first time keyData is LButton|ShiftKey|Cotrol and second time keyData is 131307.

 does any one know how to disable the combination of 'Ctrl' + '無変換',  thanks