i've been searching on internet for the property that says that a normal button was selected or not, i think there must be one because when you click a button, it turns light blue, regardless the mouse is over it or not, and when you click another button, the previous button changes back to normal and the new clicked button is set light blue.
I need it to know which button was just selected and draw a "resizing" square on it, and it gotta last as long as the button remains as the "selected one".
thanks in advance.
What you are looking for is the Focused property. For actually any Control it returns, whether it has input focus or not (so e.g. hitting Enter will cause the button to be clicked as well). Since it sounds like you want to be notified whenever that property changes, you should use the GotFocus and LostFocus events.
You can give a Control focus programmatically by calling Focus.
you can do two things,
you can do it with the events: mouseEnter and MouseLeave,
this events launches when the mouse enters or leaves the visible control area,
also the focused(boolean) property gets and sets the "selected" element
one solution could be to:
private void onElementMousenter(blablabla,sender e);
{
e.Focused=true;
}
and assign the mouseEnter events in all controls to this one so the last element will be the "selected one" until you select another
Related
I just want to add simple thing, wherever i click on TextBox I want to delete text that is inside. The thing is I DON'T have in list of events, event called Click.. Is this even possible? Or just I need to install some add on. Buttons are fine, they have Click event.
MouseButtonLeftUp would work if you only are concerned with mouse clicks. With that said, what if someone tabs into the box or focus is entered by other means?
At that point you may want to look at the GotFocus event. Any time the TextBox receives focus, you can handle the event.
TextBox has events called MouseLeftButtonUp and MouseLeftButtonDown, you can use them.
I have a simple ToolStrip with buttons in it which contain images and text. When I go over that button it changes appearance (same when it gets clicked). How can I customize this so that it stays highlighted when clicked? I have to do this over a tabControl so that it stays highlighted when the tab is entered and gets back to its normal appearance when leaving the tab. Which methods do I have to override?
Thank you!
just set ToolStripButton.CheckOnClick property to true from design time. So it will stay highlited when clicked.
About the other requirement set ToolStripButton.Checked to true on entring the tab control, and set it to false on leaving the tab control.
For entering and leaving you may use Control.Leave & Control.Enter events of tabpage/tabcontrol.
Let me know incase of any issues
I have the next situation:
there is a client app with a Form
the Form contains a few TabControl's
there are different controls on TabPage's of TabControl's
when the user clicks on any control, I need to activate the TabPage that is a parent of a control. For that I use a TabPage Enter event
when the TabPage gets activated, I need to make request to the server app, and I put focus to a hidden TextBox to disable UI
The problem is, when I click on a Button on another TabPage, in TabPage.Enter event handler I take focus to my hidden TextBox, and it seems like Button click event doesn't have enough time to be processed. When I put timer and handle TabPage.Enter event after 100 ms, the Button click event seems to be fired well. Same thing happens to all the controls: CheckBox doesn't get checked, RadioButton too. I wouldn't like to use timer, as that is not a stable solution.
Any ideas how could I make TabPage to process all mouse events before I take focus to hidden TextBox? I tried to use Application.DoEvents(), but that didn't help.
You are using a wrong event for a wrong control for what you are trying to do.
Enter event for TabPage is going to be fired when that page becomes an active control of the current form which might not happen under certain conditions. Instead, you need to use Selecting or Selected event of TabControl, depending on whether you want to cancel switching to a different tab or not (see TabControlCancelEventArgs parameter of Selecting event). In your case, Selecting event would be more appropriate since it won't allow switching to a selected tab until event is complete (unless you're doing an asynchronous request to the server). Additionally, you may no longer need to use the hidden TextBox.
UPDATE
Regarding comments to OP, when you have 2 (or more) TabControls on a form and you want to get notified when you press a button in any tab of a different TabControl, you can use Enter event for TabControl. Use a global variable to store which TabControl was activated in the Enter event and then send server request for a currently active tab of that activate TabControl.
If this doesn't work for your scenario, then you need to carefully examine your workflow and see if it can be improved in relation to what you want to accomplish.
I have an "On screen keypad" with some up/down/left/right/select buttons.
The select button is effectively a click and the arrow keys fire the associated up/down/left/right key.
The problem is that when selecting a combo box, I can't press the down/up buttons to navigate the items in the list. It is because the combo box auto closes when loosing focus. I can see similar problems happening with other controls, so I would like to see if there is a way to do the following.
For certain buttons (up/down/etc), when clicked, fire the click event, but don't take focus from w/e currently has the focus. This would allow the combox dropdown to stay open while pressing up/down to navigate through the items.
I have tried to set Focusable=False on the navigation buttons but the focus is still taken away from the combo box and the dropdown closes.
Any ideas/suggestions?
Thanks in advance
This isn't happening because of anything your Buttons are doing so changing their focus state won't make any difference. ComboBoxes close when you click anywhere outside of them, including empty space, non-interactive controls, other windows...
Well, I have a Button on my Window.
The following describes what I would like to do:
Touching the Button with the Mouse (I assume, the best event would be MouseMove), should open a new DropDown at the Button. (Something similiar like a Combobox DropDown)
This Dropdown will be filled with data, and each item is an event (item will show the name of the event as string in the DropDown), which calls a method that I'm at the other hand determining over Reflection.
What I actually would like to know, is, if it is even possible, to accomplish this task?
Creating a new DropDown at or beside the button, when the user touches the Button with the Mouse?
How would you do that?
You could create a Context Menu and display it on the buttons Mouse Enter Event.
See MSDN ContextMenu for more information.
The Extended Wpf Toolkit got something like that:
DropDownButton
For touch I think the closest event is mouse enter and mouse leave. And could you not just have a ComboBox or ListBox and manipulate the visibility (on the mouse enter and mouse leave events). For mouse leave would need to be on panel with both the button and DropDown.