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dotnet windows forms
group:How to get arrow keys?
dotnet windows forms:
subscribed to both the KeyDown and KeyPress events. Normal keys are delivered through the KeyPress event handler but arrow keys are not delivered here. They do arrive at the KeyDown event but only if the control key is also down. What am I doing wrong? -- Richard Lewis Haggard www.Haggard-And-Associates.com
That's better but it still isn't working. The system is still getting in and
overriding my own set focus commands. An arrow key is being handled in a manner much like it would with an array of radio buttons within a group. Up and left arrows go to the previous control in the Z order. Down and right shift focus to the control next in the Z order despite the fact that the program is setting the TabStop property of the windows to false. The PreviewKeyDown event is, indeed, fired on key although the IsInputKey is false, not true for cursor keys so I can now detect the user's cursor keys. I then set the focus to the appropriate control but the system then immediately turns around and sets it to the control it wants to. How can I stop the system from setting focus? -- Richard Lewis Haggard www.Haggard-And-Associates.com [quoted text, click to view] "Chris Taylor" <chris_taylor_za@hotmail.com> wrote in message news:BF803EAA-C550-42D2-B50C-D38EC6821161@microsoft.com... > Hi, > > Controls assume that the arrow are used to navigate between controls. By > handling the PreviewKeyDown event and setting the > PreviewKeyDownEventArgs.IsInputKey to true when the > PreviewKeyDownEventArgs.KeyCode is one of the arrow keys you are > interested in, allows the message to be handled by the KeyDown/KeyUp > events. > > Hope this helps > > -- > Chris Taylor > http://dotnetjunkies.com/weblog/chris.taylor > > > "Richard Lewis Haggard" <HaggardAtWorldDotStdDotCom> wrote in message > news:uJKP75$cHHA.5044@TK2MSFTNGP05.phx.gbl... >>I have a user control for which I'm trying to intercept arrow keys. I've >>subscribed to both the KeyDown and KeyPress events. Normal keys are >>delivered through the KeyPress event handler but arrow keys are not >>delivered here. They do arrive at the KeyDown event but only if the >>control key is also down. What am I doing wrong? >> -- >> Richard Lewis Haggard >> www.Haggard-And-Associates.com >> >
Hi,
Controls assume that the arrow are used to navigate between controls. By handling the PreviewKeyDown event and setting the PreviewKeyDownEventArgs.IsInputKey to true when the PreviewKeyDownEventArgs.KeyCode is one of the arrow keys you are interested in, allows the message to be handled by the KeyDown/KeyUp events. Hope this helps -- Chris Taylor http://dotnetjunkies.com/weblog/chris.taylor [quoted text, click to view] "Richard Lewis Haggard" <HaggardAtWorldDotStdDotCom> wrote in message
news:uJKP75$cHHA.5044@TK2MSFTNGP05.phx.gbl... >I have a user control for which I'm trying to intercept arrow keys. I've >subscribed to both the KeyDown and KeyPress events. Normal keys are >delivered through the KeyPress event handler but arrow keys are not >delivered here. They do arrive at the KeyDown event but only if the control >key is also down. What am I doing wrong? > -- > Richard Lewis Haggard > www.Haggard-And-Associates.com >
Hi,
Maybe you can explain what it is that you what to achieve, are you trying to control the navigation programatically? If so then you should be looking at the ProcessDialogChar/ProcessDialogKey virtual functions. -- Chris Taylor http://dotnetjunkies.com/weblog/chris.taylor [quoted text, click to view] "Richard Lewis Haggard" <HaggardAtWorldDotStdDotCom> wrote in message
news:OBFJP9KdHHA.1244@TK2MSFTNGP04.phx.gbl... > That's better but it still isn't working. The system is still getting in > and overriding my own set focus commands. > > An arrow key is being handled in a manner much like it would with an array > of radio buttons within a group. Up and left arrows go to the previous > control in the Z order. Down and right shift focus to the control next in > the Z order despite the fact that the program is setting the TabStop > property of the windows to false. > > The PreviewKeyDown event is, indeed, fired on key although the IsInputKey > is false, not true for cursor keys so I can now detect the user's cursor > keys. I then set the focus to the appropriate control but the system then > immediately turns around and sets it to the control it wants to. How can I > stop the system from setting focus? > > -- > Richard Lewis Haggard > www.Haggard-And-Associates.com > > "Chris Taylor" <chris_taylor_za@hotmail.com> wrote in message > news:BF803EAA-C550-42D2-B50C-D38EC6821161@microsoft.com... >> Hi, >> >> Controls assume that the arrow are used to navigate between controls. By >> handling the PreviewKeyDown event and setting the >> PreviewKeyDownEventArgs.IsInputKey to true when the >> PreviewKeyDownEventArgs.KeyCode is one of the arrow keys you are >> interested in, allows the message to be handled by the KeyDown/KeyUp >> events. >> >> Hope this helps >> >> -- >> Chris Taylor >> http://dotnetjunkies.com/weblog/chris.taylor >> >> >> "Richard Lewis Haggard" <HaggardAtWorldDotStdDotCom> wrote in message >> news:uJKP75$cHHA.5044@TK2MSFTNGP05.phx.gbl... >>>I have a user control for which I'm trying to intercept arrow keys. I've >>>subscribed to both the KeyDown and KeyPress events. Normal keys are >>>delivered through the KeyPress event handler but arrow keys are not >>>delivered here. They do arrive at the KeyDown event but only if the >>>control key is also down. What am I doing wrong? >>> -- >>> Richard Lewis Haggard >>> www.Haggard-And-Associates.com >>> >> > >
Thanks. That is precisely what I am trying to achieve. I want the user to be
able to use a right arrow to go to the control to the right of the current control, up arrow to go to the one above and so on. I will try to make use of the ProcessDialogxxx functions and see if that will stop the system from using Z order to set focus to a control despite my own processing of the event. -- Richard Lewis Haggard www.Haggard-And-Associates.com [quoted text, click to view] "Chris Taylor" <chris_taylor_za@hotmail.com> wrote in message news:C7BC057A-5D51-40FA-A216-F16A0659490A@microsoft.com... > Hi, > > Maybe you can explain what it is that you what to achieve, are you trying > to control the navigation programatically? If so then you should be > looking at the ProcessDialogChar/ProcessDialogKey virtual functions. > > -- > Chris Taylor > http://dotnetjunkies.com/weblog/chris.taylor > > > "Richard Lewis Haggard" <HaggardAtWorldDotStdDotCom> wrote in message > news:OBFJP9KdHHA.1244@TK2MSFTNGP04.phx.gbl... >> That's better but it still isn't working. The system is still getting in >> and overriding my own set focus commands. >> >> An arrow key is being handled in a manner much like it would with an >> array of radio buttons within a group. Up and left arrows go to the >> previous control in the Z order. Down and right shift focus to the >> control next in the Z order despite the fact that the program is setting >> the TabStop property of the windows to false. >> >> The PreviewKeyDown event is, indeed, fired on key although the IsInputKey >> is false, not true for cursor keys so I can now detect the user's cursor >> keys. I then set the focus to the appropriate control but the system then >> immediately turns around and sets it to the control it wants to. How can >> I stop the system from setting focus? >> >> -- >> Richard Lewis Haggard >> www.Haggard-And-Associates.com >> >> "Chris Taylor" <chris_taylor_za@hotmail.com> wrote in message >> news:BF803EAA-C550-42D2-B50C-D38EC6821161@microsoft.com... >>> Hi, >>> >>> Controls assume that the arrow are used to navigate between controls. By >>> handling the PreviewKeyDown event and setting the >>> PreviewKeyDownEventArgs.IsInputKey to true when the >>> PreviewKeyDownEventArgs.KeyCode is one of the arrow keys you are >>> interested in, allows the message to be handled by the KeyDown/KeyUp >>> events. >>> >>> Hope this helps >>> >>> -- >>> Chris Taylor >>> http://dotnetjunkies.com/weblog/chris.taylor >>> >>> >>> "Richard Lewis Haggard" <HaggardAtWorldDotStdDotCom> wrote in message >>> news:uJKP75$cHHA.5044@TK2MSFTNGP05.phx.gbl... >>>>I have a user control for which I'm trying to intercept arrow keys. I've >>>>subscribed to both the KeyDown and KeyPress events. Normal keys are >>>>delivered through the KeyPress event handler but arrow keys are not >>>>delivered here. They do arrive at the KeyDown event but only if the >>>>control key is also down. What am I doing wrong? >>>> -- >>>> Richard Lewis Haggard >>>> www.Haggard-And-Associates.com >>>> >>> >> >> >
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