I have a text box on a form and want to perform different actions when it receives focus depending on how the focus was received.
If the user clicks on the text box I want the standard method where the cursor is placed at the end of the text string inside the box. If the user tabs to the text box I want all of the text contained within the text box to be selected.
Is there an elegant way to accomplish this?
I suppose one thing you could try would be to set some application-level (or parent-level) tunneling events so you can toggle a flag indicating it was mouse clicked or keyboard pressed (PreviewMouseDown and PreviewKeyDown). Depending on what was previously pressed by checking that flag, you could do the appropriate action when the text box gets focus.
Related
I want to set focus on a button while caret is present in textbox and user can still enter data to textbox. But when user presses enter key, button press will be simulated.
I am currently using a work around to solve this problem by handling onKeyDown event and checking for enter key. But problem is there is no clue for user to understand this as there is not blue border around the button that indicates focus on button.
Here is a example of what I want to implement (user can enter text in textbox while focus is on :
I have tried to search on google and StackOverflow but could not find any relevant result.
This is a fundamental Windows principle. It's not possible to have 2 controls (windows) focused at the same time.
So the focus should be inside the text box. But you can get the visual indication needed by setting the ok button as AcceptButton of the form (you might also want to set cancel button as CancelButton).
In the form constructor, load event or using designer:
this.AcceptButton = okButton;
There is no need to handle KeyDown event - as soon as the text box is not multiline, pressing Enter while the focus is inside it will generate ok button click. The same applies for the button set as CancelButton when you press ESC.
I have several TextBoxes within a UniformGrid.
I want to select all the within a textbox when it is clicked I'd rather the event came from the uniformgrid. I was able to implement selecting all the text with GotKeyboardFocus for when I use only the keyboard with the code below in the handler. However when I merely click on the box it highlights while my mouse is down and on mouse up the cursor appears rather than the text remaining selected.
foreach(TextBox Box in grid.Children)
{
if (Box.IsKeyboardFocusWithin)
{
Box.SelectAll();
e.Handled = true;
break;
}
}
I also have an PreviewKeyUp handler that watches for a max number of letters then moves to the next box. Also each box is initialized with the max number of letters when the screen loads. Which is why I want to do a select all on the text in the textbox so it can be typed over easily.
I was able to use GotMouseCapture almost perfectly except that it doesn't work if you click near the text only near the edge of the textbox.
Try hooking up to the PreviewMouseUp routed event. That worked for me.
I am using EditorGridPanel with cellEditor which acts nearly like Excel. We implemented Arrow Keys to move among rows and columns.While validating a row, if it does not match the validation rule we show a MessageBox and hope that focus does not move if it is not valid. But, after the MessageBox shows - focus moves to the next row/column. Another problem is, user have to click in the OK button of the MessageBox to remove that from screen. Can we have the focus on the invalid column editor and also focus on the MessageBox OK button - so that user can press Enter to hide the message and continue entry?
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Only one element can be focused, so focus should go to the message box. AFAIK enter/escape keys works out of box with message box.
You can pass callback to the messagebox. In this callback you can focus desired cell in the grid. Like this:
Ext.Msg.alert('Title', 'Message.', function(){
this.startEditing(rowIndex, colIndex);
}.createDelegate(grid));
So after message box is closed, the focus will go back to the editor.
If a user types a few characters into an AutoCompleteBox, the DropDown is displayed as expected.
If the user then clicks elsewhere on the page, this removes the focus from the AutoCompleteBox, and the DropDown disappears... also as expected.
However, if a user then returns focus to the AutoCompleteBox, and wants to redisplay the DropDown, filtering on the characters already there, the instinct seems to be to press the Enter key to re-filter/re-display the results. This, however, does not happen.
I've managed to capture the Enter key event (must use KeyUp instead of KeyDown), but I'm not sure how to make the DropDown re-appear at that point. Ideas?
Just assign true to the IsDropDownOpen property:-
myACB.IsDropDownOpen = true;
I have a base panel class that has (among other things) three buttons. I use subclasses of this base class in two different config dialogues. Both dialogues have an OK button set as the accept button.
In one of the dialogues, if I click one of the buttons in the base class, focus immediately returns to the OK button, so pressing the enter key works as expected.
In the other dialogue, focus remains wth the button in the base class that was clicked if it is enabled, or moves to the next button if the clicked button is no longer enabled.
There is no code that handles the base class button click events in either of the derived classes.
Ideas anyone?
I'm not sure what's going on in your first dialog because it doesn't seem to be operating the way I would expect it to. The second dialog sounds more like the standard behavior.
In Windows Forms, the AcceptButton property only comes into play when pressing Enter doesn't otherwise cause any actions. In both of your examples, clicking on a button should move the focus to that button, and subsequently pressing Enter would cause another click on that button.
In any event, I think it's generally preferable to stick with the Windows user interface guidelines and not automatically change the input focus back to the OK button. If the user clicks on one of the other buttons, the focus should stay there until they move it.
i don't know what language you are using, but the button class should have a focus method that will highlite it for enter pressing. in the click method, or when you open the dialog you can call this method to make the button you want get the form's focus
c#
myButton.Focus();