what i am trying to do is that, when mouse enters on anchor tag, it displays a div on targated anchor tag and when it leaves i simply hide the div but the problem is that, the mouse enter and mouse leave fires multiple times as i mouse the pointer. i noticed that as i move the pointer ,it leaves the mouse and as i move it again it enters.
the below is the jsbin where the example is. please help. thanks.
http://jsbin.com/jucaqereca/1/edit
Related
When the user enter the Button control element,how many time will the program calls the increment function?
For this question,i don't know how to calculate the numbers that program calls the
increment time,the answer is 2,but i don't know the reason,can anyone explain to me?
Your event case is called when mouse button is clicked on your pane and on your button.
Here, You need to notice that your button is on your pane. It means when mouse down event is happened on your button, in the same time, the event is happened on your pane.
So, when you press down your mouse, Labview will recognize mouse down events are happened twice. one time on your pane and one time on your button.
i have developed custom control which inherits Button control, actually i`m creating button with one picturebox and label on Button(picturebox and label are child controls). I created same method and wired child controls to behave as clicking on parent(Button), it works but its slow no mather what i do(tried with InvokeOnClick, me.performclick, Me.OnClick(New EventArgs()), tried with same method for all events), but clicking on label or picture box is slow, i need it to be fast as clicking directly on button cause in my application is very important to be able to click on button twice in second for example, if you click on label or picturebox twice at second it will fire just one time not 2.
What i have been thinking of is to make label and picturebox invisible for event is it possible or anyother idea ?
Thanks in forward
You are doing battle with ControlStyles.StandardDoubleClick. Which is turned on for the PictureBox and Label controls but turned off for Button.
So when you are clicking rapidly on either the picturebox or the label then they'll generate the DoubleClick event instead of the Click event. You'll interpret that as "slow" since you probably didn't write a handler for that event. Subscribing the event and calling Me.OnClick is a workaround.
Just don't do this. PictureBox and Label are point-and-click convenience controls but they are extraordinarily wasteful. It takes just two lines of code in the button's OnPaint() method override to get the exact same outcome, minus the overhead and the event problems. Use e.Graphics.DrawImage() to draw the pb's image and TextRenderer.DrawText() to draw the label's text.
Using MouseDown event ensures the event is triggered once per click, regardless of click/doubleclick.
I have two canvases located to each other. One is supposed to be a kind of workspace you can add items to, select and rearange them. The other one is just a property view.
What I want to do is to be able to draw a rectrangle on the workspace. As long as the user holds down the mouse button the rectangle will show up. If he releases the button all items that are beneath the rectangle will be selected. This currently works good with the MouseDown, MouseStillDown und MouseUp events. I'm drawing another rectangle shaed canvas on the workspace which will be transformed on every MouseStillDown event and the selection will occur on the MouseUp event. My problem is, that if the user hold down the mouse button and moves it to the property canvas and then releases the button the MouseUp event from the workspace isn't called. Neither is the one from the property since it's missing a MouseDown event. So if the user releases the button there the selection won't work and the rectangle stays in the workspace.
Is there an oppurtunity to somehow avoid this? Or is there a better way to determine the area the user selected with it's mouse while holding down the left mouse button?
I am making a custom menu. I am applying colors on panels on mouse enter and mouse leave.
I have labels on these panels, and the mouse enter and leave events work snappy, but as soon as I hover over the label (on/inside) the panel, the mouse leave event is fired. I know I can just do the same thing for the label mouse enter event, but I am doing some other visual stuff, and I need to have the label mouse events totally disregarded. Any ideas?
Thanks in advance.
I eventually just used the menu control, and styled it accordingly. Does the job better than I could with code...
I have fully programmed my Minesweeper; however, I was having difficulty trying to get the same result as in the original minesweeper for when a user clicks and moves the mouse around while still right clicking. You may notice that in the original Minesweeper, when a user does as explained, the tiles that the user goes to will then look blank. If the user releases the mouse, the current tile they hovered to will become the clicked tile. In my Minesweeper, the tile I click on is the only one that will look blank, and when I hover over to the next tiles, they do not get blank like the first one I clicked on. Then when I release my mouse button when over to another tile, the very first tile I clicked on is the one that gets uncovered. Here is what I already have used. I have the MouseDown event which checks to see if the game has been started to begin the game timer. It also has some color properties for tiles when I click on them and I set a boolean to true or false depending on the user left or right click. I have the MouseUp event which looks at the boolean to determin what the user had clicked on the mouse so I know if I flag or simply click to uncover. Then I have the MouseEnter and MouseLeave which are needed to yield the proper glow I want for the tiles. What should I do to get the same results as in the original Minesweeper with the MouseDown and MouseEnter into other tiles? I tried many other things such as MouseEnter, MouseMove and MouseHover, but all seem to yield the same crummy result as what I already have.
Just another piece of information, the MouseEvents are built in to a UserControl which I then use as my tile in Minesweeper. It almost as if when an event is active, another one cannot be done at the same time.
You might want to consider, DragOver and Drag related events