so at the moment I have a dataGideView with multiSelect disabled. Although that is the case when I drag click the computer does not count that as a cell click. How do I get it so that a drag click counts the first cell it hits as a cell click.
MouseClick or Click will trigger on release. If you only want to check when the mouse is clicked, use MouseDown.
If you want something to happen when they click (before release), you will have to subscribe to the MouseDown event of each child control, and do whatever you want. To avoid repetition, you will have to create custom controls, and handle the event within the class (if possible).
Related
I am using Control.Draggable, a Nuget package that lets you drag and drop a control. However, when a button is dragged, it fires up the click event. How do I pragmatically prevent the button from sending a click event when it is dragged?
You could use the MouseDown event to save the position of the button, then use MouseUp to check if it matches what you saved with MouseDown. If it is the same(meaning the button hasn't moved) then run the code you want on click.
I have a listview for displaying a table inside of a button. I have a click event assigned to the button, but when the user clicks on the list view, a row is selected on the list view and the mouse click is never bubbled up to the button.
I'm stuck at this point, and need a way to solve this. All the examples I've seen online are for placing a button inside the listview. How do I make this work?
Set the IsHitTestVisible property to false on your ListView. Since it is a control that normally processes click events, doing this will have it ignore them.
If you don't want the items to be selectable in the first place, you could make the List View unable to receive Focus. Just set the Focusable property to false.
With the List View unable to receive focus, then I would expect the mouse event to bubble up to the button.
Is there a way in silverlight to detect when a lost focus event is triggered if this
happens because the tab key is pressed or the user presses a mouse button on another control.
This is what i want to achieve:
I have a RadGridView with 1 row. In the last column i have a numeric input, when
an user tabs out of this control, a new row should be added to the sourcecollection in the viewmodel, this automaticly adds a new row to the grid, then the first column on this row should have focus and the dropdownlist in the celledittemplate should be opened.
When i use the lost focus event adding the new row works fine, though this also works when i don't use tab to unfocus the control. Also, the first column on the new row is not selected, it somehow
gives focus to row 0 column 0.
Ok, inspired by the answer Dipak gave I came up with a slightly different solution,
I handled the Gridviews keydown and keyup events, keydown sets a bool to true, keyup to false.
the execution sequence fortunately is keydown, lostfocus, keyup
so in the lost focus event I only need to check wether the bool is true;
strangely enough the keyup event is not always triggered, but since the lostfocus is
I set the bool to false there also.
yes you can trace it, Provided you have implemented mouse up/down event on each focusable element on your screen. You will have flag to check if mouse preview event up/down happen on any element, if not then its TAB key which cause lost focus.
This is work around if some one not suggest proper solution.
I have a feature request that when a ComboBox is 'clicked into' that it clears the text so that the user can start entering in new data to search. Does anyone know of a way to hook into this? The 'click' event is raised on when the text is clicked as well as when the drop down arrow is also clicked (which opens up the drop down with items). I only want it to happen on the first, not the latter.
Right now I'm capturing the click event and filtering on the DroppedDown property like so:
if(!comboBox.DroppedDown)
{
// clear selection
}
This seems to work most of the time, but bugs out frequently as well... so its not 100%.
If anyone knows of a proper way to do this I would appreciate!
Don't handle the click event. For one thing, it won't fire if the user tabs the focus into the control. Use the Enter event which fires when the control receives focus. And rather than clearing text you should just select it all which will give the best of both worlds:
1) The user can start entering new text which will clear any old text or
2) tab past the control and leave the contained text as it was.
If you always remove the previous text you may anger users.
Try the "Enter" event. It happens when a control gains focus on the form.
My form has several textboxes and several buttons. The textboxes are loaded with data by the load event. If I make changes to the textboxes and then move the cursor over a button, the textboxes are suddenly loaded again with the original information. I don't click a button. I just move the mouse over one. Why is this happening and how do I stop it?
This cannot happen by itself. I suggest you check all event-settings.
For instance, you could have, by accident, linked the Load event to the Button's OnMouseEnter or something like that.
After your comment:
You should absolutely not use the paint event to initialize things. The paint event will be called after every change in the Form.
So move that code to the Load event.