I would like to ask why the mouse Enter and mouse Leave events are triggered at the same time when using antd modal
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This is the mock-up of a child window that I have in a Windows Forms application.
This will be shown when a button is clicked on the parent window.
When the child form opens up, the focus is in Text box1.
The Leave event on the Text box1 fires when the user tabs out of it or clicks on any button.
This triggers a validation:
if(String.IsNullOrEmpty(textBox1.Text)
{
MessageBox.Show("Please enter a value of Id.");
}
else {
... other logic omitted for brevity
}
Now the user can also click on the Cancel button to exit the form without doing any action.
Here, on the first try, the Leave event fires because the focus is in Text box1 when the Form is loaded so when the user clicks on Cancel for the first time the form does not close, instead the message box with validation message is shown.
On the second click, since the focus is no longer on Text box1, the Leave event does not fire and the form closes.
I can put the focus on any other control to handle this but for the sake of user experience I had to put the focus on Textbox1 since it's value decides the further logic of what is shown in Textbox2(Textbox1 can be left empty in which case nothing is shown in Textbox2 but that is not related to this question).
Tried this to see if I can get the Cancel button inside the Leave event of Textbox1:
Button b = sender as Button
b is NULL when Cancel is clicked.
What can I do to make the Cancel click work, without triggering the Leave event initially?
Thanks in advance,
Regards.
If you only want to supress the error message when the cancel button recieves the focus, simply check for the cancelButton.Focused flag in the leave event, then block the message if the cancel button got the focus.
Nevertheless, it is usually considered good practice to avoid modal dialog boxes if they are not required. So depending on your particular situation, you may decide to replace the MessageBox with a ToolTip instead, which will not entirely block the UI thread.
I created a custom tooltip that stays open when the mouse hovers over a button by using a popup. My solution is here. You can see the following attachment that displays the popup working correctly. By the way, any mouse event will be triggered on the popup in this state, such as MouseEnter:
For simplicity, hovering a mouse over the popup will trigger the MouseEnter event:
<Popup MouseEnter="TT_Popup_Control_MouseEnter"></Popup>
The issue is when the Child Ribbon Buttons collapse. When I click on the collapsed Parent Ribbon Button to expand the Child Buttons, and hover over the Child Button, I get something like this:
Again for simplicity, hovering a mouse over the popup will no longer trigger the MouseEnter event:
<Popup MouseEnter="TT_Popup_Control_MouseEnter"></Popup>
So when I hover over the popup, the popup no longer stays open in this state. Since the popup mouse events are no longer triggered, I believe this is the issue, but I don't know why this is the issue. Did I discover a bug in the .NET framework? Or is there something I am missing here?
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 a form wih many fields in it and a close button at the end. Only in IE, when I tab out of the button, instead of going to the first field in the form, it tabs to the browser url and then to the tabs open in browser and home icon and all browser icons on the top. So, what I want to do is to catch the tab event on close button and bring the focus back to the first field in the form. So, I tried using specialkey, keyup and keydown in the listeners for the button. But, none of them were called when tab event was fired on button. I have enablekeyevents:true in the configuration. Can someone suggest me a way of capturing the tabout event on button. Thank you so much.
I solved it by using blur event on button. I check on blur whether Ext.EventObject.Tab and Ext.EventObject.shiftKey exists
I am playing around with mouse events and I realized there are a bunch of events but I have no idea when to use which one.
There is the Click event, MouseDown event, PreviewMouseDown, PreviewLeftButtonMouseDown, LeftButtonMouseDown.
What are the differences between then? They all do the same and that is notifying once mouse being pressed.
When shall I use which for what?
Click event : The user has clicked the element and released the button
MouseDown event: The user has pressed the mouse button (before releasing it). Click happens to be called if the user has both pressed and release it on the same element.
PreviewMouseDown : same as mousedown, except it is a tunnel event. It is called on parent function first, then tunneled to the child container while mousedown bubbles upwards (on child container first, and then on parent containers).
LeftButtonMouseDown : Called when left mouse button is pressed
PreviousLeftButtonMouseDown : I am not sure about this event. Could not find it. Did you mean PreviewLeftButtonMouseDown?