I'm wanting to detect a right click on any PictureBox in the form. I have already set up the right click function for one PictureBox. This is fine but I would like one event that will fire for all right clicks on PictureBoxes on the form.
This right click even will need to know the PictureBox name because the context menu will be different for some of the PictureBoxes.
Here is the code I have for the right click event for one PictureBox.
private void DesktopIcon1Icon_MouseClick(object sender, MouseEventArgs e)
{
switch (e.Button)
{
case MouseButtons.Right:
{
DesktopIconRightclick.Show(this, new Point(e.X, e.Y));
}
break;
}
}
I need to adapt this code to fire if any PictureBox is right clicked.
Example Update
if (pic = DesktopIcon2)
{
openToolStripMenuItem.visible = false;
}
You can use one event that will fire for all right clicks on PictureBoxes like this:
public Form1()
{
InitializeComponent();
pictureBox1.MouseClick += pictureBox_MouseClick;
pictureBox2.MouseClick += pictureBox_MouseClick;
}
Then you can use Sender to find PictureBox's Name like this:
private void pictureBox_MouseClick(object sender, MouseEventArgs e)
{
var pic = (sender as PictureBox).Name;//pic is the Name of the PictureBox that is clicked
switch (e.Button)
{
case MouseButtons.Right:
{
MessageBox.Show(pic);//Just for example
DesktopIconRightclick.Show(this, new Point(e.X, e.Y));
}
break;
}
}
You can try using reflection to find all PictureBox instances.
Check GetTypes as a starting point.
Check this SO for implementation example:
Using reflection to get all classes of certain base type in dll
Related
i am creating simple inventory system. i need only this if i click picturebox 1 relavent message should display "pic1" if i click piturebox 2 relavent message should display "pic2"
public Form1()
{
InitializeComponent();
this.MouseClick += mouseClick;
}
private void mouseClick(object sender, MouseEventArgs e)
{
var clickedPictureBox = (PictureBox)sender;
if (clickedPictureBox == pictureBox1)
{
MessageBox.Show("Pic1");
}
}
i tried the code but it is not working
First, you're using the form's mouse click event, you'll need to replace:
this.MouseClick += mouseClick;
by:
pictureBox1.MouseClick += mouseClick;
pictureBox2.MouseClick += mouseClick;
Option 1: Use the sender object
The mouse click event gives you the argument sender, which is the object that triggered the event.
So you could use it like this:
var clickedPictureBox = (PictureBox)sender;
if (clickedPictureBox == pictureBox1)
...
Option 2: use a tag
You can set tags in your winforms elements and use them. For example, go to the Designer and set the tag of both pictures to "Pic1" and "Pic2" and then use it like this:
var clickedPictureBox = (PictureBox)sender;
if (clickedPictureBox.Tag.ToString() == "Pic1")
...
I'd like to create a roulette game, and I've made a PictureBox with an image of a roulette table.
I've tried to set Visibility = False in the property and in code:
pictureBox1.Visible = !pictureBox1.Visible;
But when I click on the hidden PictureBox, nothing happens.
Do you have any idea how to make it work?
I want to make it visible from being invisible, by clicking on it.
Once you make the visibility of an Item false, it can no longer be clicked. You can handle the click event on the form or container level, check that the mouse coordinates are contained in the bounds of the PictureBox and use that to make it visible again.
i.e.
//Common eventhandler assigned to all of your PictureBox.Click Events
private void pictureBox_Click(object sender, EventArgs e)
{
((PictureBox)sender).Visible = false;
}
private void Form1_Click(object sender, EventArgs e)
{
foreach (var item in this.Controls) // or whatever your container control is
{
if(item is PictureBox)
{
PictureBox pb = (PictureBox)item;
if (pb.Bounds.Contains(PointToClient( MousePosition)))
{
pb.Visible = true;
}
}
}
}
Problem with your logic is that once the PictureBox is made invisible, you can no longer click it anymore, since it's no longer on the form, and while you can for sure click the empty space it left, you're still not clicking it.
A possibility would be to, instead of making visible/invisible, to put/remove its background picture, so it appears to have disappeared but in fact it's still there, still able to receive clicks and respond to events.
If you want to make the pictureBox1 not visible, you would write pictureBox1.Visible = false;
Edit: What you are doing should work. I created a winform and put a picture box in it. I double clicked the picture box to make Click event handler and typed pictureBox1.Visible = !pictureBox1.Visible;. When I debug the program and click on the picture box, it turns invisible. I can't think of why it isn't working for you.
Edit: I understand what you want now. To make it visible on the click of it when it is invisible. Unfortunately I don't know how to do that.
A maybe-silly but simple way might be to put one picture box on top of the other. pictureBox1 would be your picture, pictureBox2 would have no picture. Then you could do something like this:
private void pictureBox1_Click(object sender, EventArgs e)
{
pictureBox1.Visible = false;
pictureBox2.Visible = true;
}
private void pictureBox2_Click(object sender, EventArgs e)
{
pictureBox1.Visible = true;
pictureBox2.Visible = false;
}
You could put each of your PictureBox controls in a Panel control. Then handle the Click event of both the Panel and the PictureBox.
private void panel1_Click(object sender, EventArgs e)
{
pictureBox1.Visible = true;
}
private void pictureBox1_Click(object sender, EventArgs e)
{
pictureBox1.Visible = false;
}
I have the following problem: I have a panel which has a specific color, say red.
When the user presses his mouse, the color of this panel gets stored in a variable. Then the user moves, his mouse still pressed, over to another panel. When he releases the mouse there, this panel should get the background color of the first that had been stored in the variable. My code looks something like this:
public Color currentColor;
private void ColorPickMouseDown(object sender, MouseEventArgs e)
{
Panel pnlSender = (Panel)sender;
currentColor = pnlSender.BackColor;
}
private void AttempsColorChanger(object sender, MouseEventArgs e)
{
Panel pnl = (Panel)sender;
pnl.BackColor = currentColor;
}
I need to identify the sender first because there are many possible panels that can trigger this event. The first MouseDown method works totally fine, the color is stored nicely in the variable. The secon one however doesn't even get triggered when the user does what I described above. When the ser clicks on the second panel, it works (there is an MouseUp part in a click aswell I guess).
What's wrong here? Why is the event not triggered when the user holds the mouse key down before?
(This answer assumes you are using Windows Forms.)
It could be that you need to capture the mouse by setting this.Capture = true in the MouseDown of the source control. (See Control.Capture)
If you did that, the source window would get the MouseUp event, and it would be the source window that had to determine the destination window under the mouse coords. You can do that using Control.GetChildAtPoint() (see this answer on Stack Overflow).
Use Windows Forms Drag and Drop Support Instead! <- Click for more info
I'm going to suggest you bite the bullet and use the .Net Drag and Drop methods to do this. It requires some reading up, but it will be much better to use it.
You start a drag in response to a MouseDown event by calling Control.DoDragDrop().
Then you need to handle the Control.DragDrop event in the drop target control.
There's a few more things you might need to do to set it up; see the Control.DoDragDrop() documentation for an example.
(For WPF drag and drop support, see here.)
when your mouse enter the target control , mouse down triggerd ang get target BackColor! you need add an boolean flag to your code :
public Color currentColor;
bool flag=false;
private void ColorPickMouseDown(object sender, MouseEventArgs e)
{
if(flag==false)
{
flag=true
Panel pnlSender = (Panel)sender;
currentColor = pnlSender.BackColor;
}
}
//assume mouse up for panles
private void AttempsColorChanger(object sender, MouseEventArgs e)
{
if(flag==true)
{
Panel pnl = (Panel)sender;
pnl.BackColor = currentColor;
flag=flase;
}
}
and also you need change your flag in mouseMove( if )
As I mentioned in my comment Mouse Events are captured by the originating control, You would probably be better off using the DragDrop functionality built into Windows Forms. Something like this should work for you. I assigned common event handlers, so they can be assigned to all of your panels and just work.
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void panel_MouseDown(object sender, MouseEventArgs e)
{
((Control)sender).DoDragDrop(((Control)sender).BackColor,DragDropEffects.All);
}
private void panel_DragDrop(object sender, DragEventArgs e)
{
((Control)sender).BackColor = (Color)e.Data.GetData(BackColor.GetType());
}
private void panel_DragEnter(object sender, DragEventArgs e)
{
e.Effect = DragDropEffects.Copy;
}
}
I know it's an old question but I had the same issue and none of the above answers worked for me. In my case I had to handle the MouseMove event in the target control and check for the mouse to be released. I did set 'BringToFront' on my target panel just in case that helped at all.
public Color currentColor;
private void ColorPickMouseDown(object sender, MouseEventArgs e)
{
Panel pnlSender = (Panel)sender;
currentColor = pnlSender.BackColor;
}
private void panelTarget_MouseMove(object sender, MouseEventArgs e)
{
//the mouse button is released
if (SortMouseLocation == Point.Empty)
{
Panel pnl = (Panel)sender;
pnl.BackColor = currentColor;
}
}
I have some context menu items that are not clickable. They just report the status of something. I don't like how the cursor still appears like they're clickable though.
Anyway to change this?
There isn't a Cursor Field like one would expect.
Handle the MouseMove event of the whole ToolStrip and check if the current mouse location is between the toolStripItem.Bounds. if so, change ToolStrip.Cursor
Amiram sent me in the right direction. You can't set the Cursor on the "ToolStripMenuItem" you have to set it on the parent ContextMenuStrip.
As for the mouse events, that has to go on the ToolStripMenuItems. As the MouseMove event is not fired when the Mouse is over ToolStripMenuItems.
// Init Code
contextMenuStrip1.Cursor = Cursors.Hand;
recentMessagesToolStripMenuItem.MouseLeave += new EventHandler(SetCursorToHandOn_MouseLeave);
recentMessagesToolStripMenuItem.MouseEnter += new EventHandler(SetCursorToArrowOn_MouseEnter);
private void SetCursorToArrowOn_MouseEnter(object sender, EventArgs e)
{
contextMenuStrip1.Cursor = Cursors.Arrow;
}
private void SetCursorToHandOn_MouseLeave(object sender, EventArgs e)
{
contextMenuStrip1.Cursor = Cursors.Hand;
}
Sorry if this is a dumb question, I'm taking an intro to programming class and need a bit of help with this project I'm working on.
I'm trying to write an application that has about 30 buttons. One common thing I want is for all the buttons to turn yellow when clicked. If they're clicked a second time, they change back to the default color. right now I use the code:
private void btn_1_Click(object sender, EventArgs e)
{
btn_1.BackColor = Color.Yellow;
}
But that only turns the buttons yellow, I can't turn them "off" by clicking it a second time.
Also, when I'm creating these button events in VS2010, I end up with 30 different event handlers for each button..Is there a way to get them all to do the same thing without having to write all the repetitive code?
I'm guessing that I would have to write my own buttons class? How would I go about doing that? Do i need to create a class library which inherits Buttons?
Sorry for the noob questions. THanks
If every button has a specific action that needs to be performed, then yes, you need to have a click handler for each; however, you can encapsulate the common behavior in a single method.
For example:
private void btn_1_Click(object sender, EventArgs e)
{
ToggleColor((Button)sender);
//rest of the code specific to this button
}
private void ToggleColor (Button button)
{
if(button.Color==Color.Yellow;
button.Color=Color.Black;
else
button.Color=Color.Yellow;
}
Note that above code is not tested.
Now, if all the buttons do the same thing, you can just set the on click handlers for all of them to be btn_1_Click; for example.
private void btn_1_Click(object sender, EventArgs e)
{
if (btn_1.BackColor != Color.Yellow)
{
btn_1.BackColor = Color.Yellow
}
else
{
btn_1.BackColor = Color.Control;
}
}
this is switching default and yellow
If all buttons do the exact same thing you can assign the same event handler to all buttons (instead of btn_1_Click, btn_2_Click etc... you'd have btton_click) - you can select this handler in the properties of each button.
You don't have to write your own class. You can simply assign all your buttons to the same event handler, like this:
button1.Click += new EventHandler(myEventHandler);
button2.Click += new EventHandler(myEventHandler);
button3.Click += new EventHandler(myEventHandler);
button4.Click += new EventHandler(myEventHandler);
Just keep in mind that your event handler has this signature:
private void myEventHandler(object sender, EventArgs e)
By doing that, all your buttons, when clicked, will trigger the same method.
Now to control the color, what you can do is create a simple property on your form which would hold the last color applied. It could be an enum, then you could simply check its value and apply the other one to the buttons, like this:
// Declare your enum:
private enum Colors { Yellow, Default }
private Colors ActualColor = Colors.Default;
// Write your custom event handler:
private void myEventHandler(object sender, EventArgs e)
{
if (ActualColor == Colors.Default)
{
// Apply yellow to buttons
ActualColor = Colors.Yellow;
}
else
{
// Apply default
ActualColor = Colors.Default;
}
}
In order to keep track whether it is the 'second time' you press the button, you should declare a variable OUTSIDE the method, which indicates whether you already pressed the button or not.
For example:
public bool IsButtonYellow;
private void btn_1_Click(object sender, EventArgs e) {
if(!IsButtonYellow) {
btn.BackColor = Color.Yellow;
IsButtonYellow = true;
}
else {
btn.BackColor = Control.DefaultBackColor;
IsButtonYellow = false;
}
}
Yes:
Create your own button class
Inherit from Button
Implement the handler in your button class and you're done
You can do something simple like this:
public class MyButton : Button
{
private bool _buttonState;
protected override void OnClick(EventArgs e)
{
base.OnClick(e);
if (_buttonState)
{
BackColor = Color.Yellow;
}
else
{
BackColor = Color.White;
}
}
}
Then in your code you can just create as many of these "MyButton" objects as you need, with no code repetition.
To make all buttons use the same event handler in VS2010:
Click once on a button to select it.
In the “properties” window: click on the “lightning” (=events).
Paste the first button’s event name (btn_1_Click) next to “Click”.
Do the same for every button.
As for changing the color:
See answer by killie01.
Good luck.