I have an image in my application and I need to draw a line according to the mouse position. What I tried to do is use QueryCursor event to get the mouse position and draw the line, which works as planned.
However, now I wish to hide the cursor while over the image so that only the line is visible. I tried to change the cursor to 'None' but then the event stopped working. What should I do?
You should be able to set the Cursor property to Cursors.None in the QueryCursor event handler and then set it back to null when the MouseLeave event fires.
This works fine for me:
<Image ... QueryCursor="Button_QueryCursor" MouseLeave="Button_MouseLeave" />
private void Image_QueryCursor(object sender, QueryCursorEventArgs e)
{
Cursor = Cursors.None;
//...
}
private void Image_MouseLeave(object sender, MouseEventArgs e)
{
Cursor = null;
}
Please set the Cursors.None to the Windows' Cursor property
i.e this.Cursor = Cursors.None;
Hope this helps.
Related
I have a couple of event handlers attached to a label: one is MouseEnter and the other is MouseLeave. The MouseEnter works fine and changes the mouse cursor to an IBeam as the mouse enters the label boundary, however, the mouse cursor doesn't back to an arrow and remains as an IBeam as the mouse exists the label boundary. I can't seem to figure out what is wrong.
void lbRefLevel_MouseLeave(object sender, MouseEventArgs e)
{
Label lbRefLevel = (Label)sender;
Mouse.OverrideCursor = Cursors.Arrow;
Mouse.Capture(lbRefLevel);
}
void lbRefLevel_MouseEnter(object sender, MouseEventArgs e)
{
Label lbRefLevel = (Label)sender;
Mouse.OverrideCursor = Cursors.IBeam;
Mouse.Capture(lbRefLevel);
}
Set Mouse.OverrideCursor = null; in your mouse leave event, this will reset the override you done on your mouse enter.
Overriding again is not going to help.
To show the relevant information(in monopoly game, the property belongs which player, current market price etc.), I put a Label on the top of a panel, and used a ToolTip object to display the information. This is the image of my current setup.
Here are the steps I have done:
1.Added MouseHover event handler (The Label name is MEDITERANEAN)
this.MEDITERANEAN.MouseHover += new System.EventHandler(this.MEDITERANEAN_MouseHover);
2.Initialized Tooltip
private void InitializeToolTip()
{
toolTipLabel.ToolTipIcon = ToolTipIcon.Info;
toolTipLabel.IsBalloon = true;
toolTipLabel.ShowAlways = true;
}
3.Call setToolTip() in MouseHover call back function
private void MEDITERANEAN_MouseHover(object sender, EventArgs e)
{
toolTipLabel.SetToolTip(MEDITERANEAN, "You put mouse over me");
rolledDice.AppendText("Mouse Over");
}
But when I start application and move my cursor over the label, there is no text from toolTipLabel. What part did I make mistakes?
Interestingly, i made other function and it works.
private void panelBoard_MouseOver(object sender, EventArgs e)
{
toolTipLabel.SetToolTip(panelBoard, "You put mouse over me");
rolledDice.AppendText("Mouse Over");
}
I think you just need to bring your lable control in front of image. Try something like this .
MEDITERANEAN.BringToFront();
I found the solution, first I should set Panel's property "Enable" to true, then set label's property "visible" to true as well.
I think that must be only a little problem, but I can't get a clear thought on that. Someone an idea?
I have some borders on a canvas (filled with images) and i want to click the border (i do this with the OnMouseLeftButtonDown) where the border gets red (so the user knows for sure which object he had clicked) and then, after 1 or 2 seconds, when the mousebutton is still pushed down, a drag'n'drop should start.
At first I had the borders inside buttons, but the clickevent seems to conflict with the dragevent. So I got rid of the buttons and did everything inside the borders directly, which works well also. But how can I start the drag after the mousebuttondown and stop it when the mousebuttonup happens before the time runs out.
Someone an idea for a clean solution?
private void OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
_source = sender as Border;
Mouse.Capture(_source);
}
private void OnMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
_source = null;
Mouse.Capture(null);
}
and in event OnMouseMove you can modify border margins depends on mouse position but after checking if _source is type of Border.
var position = e.GetPosition(Canvas);
EDIT:
For that time you can add property Stopwatch _watch, and inside OnMouseLeftButtonDown event handler you can do it:
_watch = Stopwatch.StartNew();
in OnMouseLeftButtonUp:
_watch.Stop();
and in OnMouseMove before your code:
while (_watch.ElapsedMilliseconds < 2000 && _watch.IsRunning)
{
Thread.Sleep(100);
}
i was trying to implemet an image button in winforms application as i can ...easy when using asp.net
the problem seem to be(i suspect) that when the mouse is over the image inside the picturebox
it is not responding or not triggering the mouseEnter event
it looks like if i had a picture that is smaller than the pictureBox Size it will accept the reason to trigger the event but over the image within the pictureBox it would Not ?
the trick was to set pictureBox to sizeMode=zoom. then do 2 things when the mouse is over the "imageButton" : change the size of PictureBox a little larger + change cursor to hand
so i will get a kind of mouse over effect as i could with asp.net
did anyone have that problem ?
at first i tried mouseHover, then i thought enter would do better as it only requiers the mouse to pass the borders of the picture box... both enter and hover events did not work for me ...
Edit :
the event does trigger , i can see that if i initially set sizemode to CenterImage and inside the event
i ask for sizemode=zoom, so the effect dose occur ..but cursor.current=Cursors.Hand will not change.
This should work
private void pictureBox1_MouseEnter(object sender, EventArgs e)
{
pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
pictureBox1.Cursor = Cursors.Hand;
}
private void pictureBox1_MouseLeave(object sender, EventArgs e)
{
pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;
pictureBox1.Cursor = Cursors.Default;
}
seem like i should have known better how to use Cursors class .
cursor=Cursors.hand;
rather than
cursor.current=Cursors.hand;
that was embarrassing ..
only add MouseMove event on pictureBox and set a Cursor for this
private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
{
pictureBox1.Cursor = Cursors.Hand;
}
I'm creating a custom DataGridView, in which the CheckBox Shows a border when MouseHover is raised.
Here is what I've done so far.
void checkBox_MouseLeave(object sender, EventArgs e)
{
//showBorder defines whether the border is drawn.
this.showBorder = false;
this.DataGridView.InvalidateCell(this);
}
void CheckBoxMouseHover(object sender, EventArgs e)
{
this.showBorder = true;
this.CheckBox.BringToFront();
this.DataGridView.InvalidateCell(this);
}
protected override void Paint(...........)
{
..........
if (showBorder)
{
GraphicsPath border=new GraphicsPath();
border.AddRectangle(new Rectangle(checkBoxPosition.X-1,checkBoxPosition.Y-1,checkBoxSize.Width+1,checkBoxSize.Height+1));
graphics.DrawPath(new Pen(borderColor,1),border);
}
}
But is comes so slow that I have to wait for about half a second to see do border show.
Anyway, MouseLeave works fine.
So how can I improve the performance here?
In addition, how can I customize the checkbox? for example, the background color, etc.
You're using MouseHover event for the Mouse going over the control. Try MouseEnter instead. MouseHover is triggered after the mouse stays over the control for a little bit of time. MouseEnter is instant