i want the mouse to freez (cant move) when mouse down
thanks
I used a tableLayoutPanel for your reference (Just remember to implement the code to the Control that is in the front):
OPTION1: Reset the mouse position:
Define two global variables:
bool mousemove = true;
Point currentp = new Point(0, 0);
Handel MouseDown Event to update mousemove :
private void tableLayoutPanel1_MouseDown(object sender, MouseEventArgs e)
{
int offsetX = (sender as Control).Location.X + this.Location.X;
int offsetY = (sender as Control).Location.Y + this.Location.Y;
mousemove = false;
currentp = new Point(e.X+offsetX, e.Y+offsetY); //or just use Cursor.Position
}
Handel MouseMove to disable/enable move:
private void tableLayoutPanel1_MouseMove(object sender, MouseEventArgs e)
{
if (!mousemove)
{
this.Cursor = new Cursor(Cursor.Current.Handle);
Cursor.Position = currentp;
}
}
Reset mousemove while Mouseup
private void tableLayoutPanel1_MouseUp(object sender, MouseEventArgs e)
{
mousemove = true;
}
OPTION2: Limit mouse clipping rectangle:
Limit it while MouseDown:
private void tableLayoutPanel1_MouseDown(object sender, MouseEventArgs e)
{
this.Cursor = new Cursor(Cursor.Current.Handle);
Cursor.Position = Cursor.Position;
Cursor.Clip = new Rectangle(Cursor.Position, new Size(0, 0));
}
Release it after MouseUp:
private void tableLayoutPanel1_MouseUp(object sender, MouseEventArgs e)
{
this.Cursor = new Cursor(Cursor.Current.Handle);
Cursor.Position = Cursor.Position;
Cursor.Clip = Screen.PrimaryScreen.Bounds;
}
You can't.
Mouse acts in the OS Layer, not your app... even if you freeze your app, mouse will be able to run.
You can try to disconnect the mouse driver/port but you do need to ask the user what port the mouse is using as for the OS it's a Input device, just like a pen in a design board and you will not know the one to disconnect.
It's possible, Windows has a dedicated API for it, BlockInput(). Be sure to save all your work when you experiment with it, it is rather effective. You may need to reboot your machine, the thing your user will do when you use it in a program. Here's a sample Windows Forms form that uses it, it needs a button and a timer:
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
timer1.Interval = 3000;
timer1.Tick += new EventHandler(timer1_Tick);
button1.Click += new EventHandler(button1_Click);
}
private void button1_Click(object sender, EventArgs e) {
timer1.Enabled = true;
BlockInput(true);
}
private void timer1_Tick(object sender, EventArgs e) {
timer1.Enabled = false;
BlockInput(false);
}
[System.Runtime.InteropServices.DllImport("user32.dll")]
private static extern bool BlockInput(bool block);
}
You can fake that behavior for your window in the following way:
Remember current cursor and its position.
Set
this.Cursor = Cursors.None;
Draw the remembered cursor at specified position and introduce canExecute flag for all your mouse handlers to disable them during "fake mouse freezing".
Can't you move the mouse pointer somewhere? You could reset its position when moving (which may look ugly).
Setup a low level mouse hook with SetWindowsHookEx and ignore all messages to the HOOKPROC delegate you specified (means not to call CallNextHookEx).
Related
I've created my own dragable control. The dragging is very simple:
bool moving = false; Point click = new Point(0, 0);
private void _MouseDown(object sender, MouseButtonEventArgs e)
{
moving = true;
click = Mouse.GetPosition(this);
}
private void _MouseUp(object sender, MouseButtonEventArgs e) { moving = false; }
private void _MouseMove(object sender, MouseEventArgs e)
{
if (moving == true)
{
Point po = Mouse.GetPosition(this);
this.Margin = new Thickness(this.Margin.Left + (po.X - click.X), this.Margin.Top + (po.Y - click.Y), 0, 0);
}
}
My problem is that if I drag too fast the cursor "escapes" my control. It's obvious why, however it's not too obvious how to fix this since I can't easily subscribe to every other control's mousemove in the window, and my control is small (about 35,15 px) so this happends a lot. I think that if I can easily force the mouse cursor to stay in the controll that would be a solution(not ideal, though).
So what is the bast way to fix this? How professinoal controls handle this?
P.S. I'm learning WPF, so I'm probably doing some things wrong
Your cursor leaves the usercontrol on fast moves and the MouseMove event will not be triggered anymore.
As said in the comments from the author in Drag Drop UserControls using the MouseMove event of a surrounding Canvas should help.
I've figured it out, it's very simple, using a timer.
bool moving = false; Point click = new Point(0, 0);
System.Timers.Timer _MOVER = new System.Timers.Timer();
public PersonControl()
{
InitializeComponent();
_MOVER.Elapsed += new System.Timers.ElapsedEventHandler((o, v) => { Dispatcher.Invoke(Move); });
_MOVER.Enabled = true;
_MOVER.Interval = 10;
}
private void _MouseDown(object sender, MouseButtonEventArgs e)
{
moving = true;
click = Mouse.GetPosition(this);
Canvas.SetZIndex(this, 100);
_MOVER.Start();
}
private void _MouseUp(object sender, MouseButtonEventArgs e)
{
moving = false;
Canvas.SetZIndex(this, 0);
_MOVER.Stop();
}
private void Move()
{
if (moving == true)
{
Point po = Mouse.GetPosition(this);
this.Margin = new Thickness(this.Margin.Left + (po.X - click.X), this.Margin.Top + (po.Y - click.Y), 0, 0);
}
}
When is try with code, there appear two label and when move, screen become white from where they move. I want single label move with mouse move.
bool mDown = false;
private void label13_MouseMove(object sender, MouseEventArgs e)
{
if (mDown)
{
label13.Location = e.Location;
}
}
private void label13_MouseDown(object sender, MouseEventArgs e)
{
mDown = true;
}
private void label13_MouseUp(object sender, MouseEventArgs e)
{
mDown = false;
}
The e.Location gives you a mouse position relative to the control that is being clicked. So to fix that, instead of
label13.Location = e.Location;
use
var pos = this.PointToClient(Cursor.Position);
label13.Location = new Point(pos.X - offset.X, pos.Y - offset.Y);`
Create the offset variable as a property of the form (type Point) and initialize it on the mouse down event:
offset = e.Location;
I have a fom which has one user control docked to fill.
this user control displays different images.each image has Id and I have a list of imageId vs imageDetail object dictionary.
Mouse Move event of this user control is captured and i am displaying current X and Y position of mouse in tool tip.
I also want to display image detail in tool tip when user keeps the mouse over image for some time.
I tried to do this with Mouse Hover event but it only raised when mouse enters in user control bound. after this if i move mouse within user control mouse hover event does not fire...
How can i display current X, Y position along image detail in tool tip.
is there any way to simulate Mouse Hover event within Mouse Move using some timer.
Is there any sample code..
I solved this problem by
public partial class Form1 : Form
{
Timer timer;
bool moveStart;
int count = 0;
Point prev;
public Form1()
{
InitializeComponent();
timer = new Timer();
timer.Interval = 1000;
timer.Tick += new EventHandler(timer_Tick);
}
void timer_Tick(object sender, EventArgs e)
{
this.timer.Stop();
this.moveStart = false;
this.toolTip1.SetToolTip(this, string.Format("Mouse Hover"));
this.textBox1.Text = (++count).ToString();
}
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (this.prev.X == e.X && this.prev.Y == e.Y)
return;
if (moveStart)
{
this.prev = new Point(e.X, e.Y);
this.timer.Stop();
this.toolTip1.SetToolTip(this, string.Format("Mouse Move\nX : {0}\nY : {1}", e.X, e.Y));
this.timer.Start();
}
else
{
moveStart = true;
}
}
}
The simplest way would be to call the MouseOver subroutine from the MouseMove subroutine as such:
void MouseMove(object sender, MouseEventArgs e)
{
//Call the MouseHover event
MouseHover(sender, e);
}
void MouseHover(object sender, EventArgs e)
{
//MouseHover event code
}
If you want more control over when and how to display your tooltip, however, you'll need to do something similar to the following:
Declare a listening variable at class level.
Hook to the MouseHover event so the listening variable is turned on when the mouse enters.
Hook to the MouseLeave event so the listening variable is turned off when the mouse leaves.
Put your tooltip code in the MouseMove handler so it displays your tooltip if the listening variable is on.
Here's some code to demonstrate what's I outlined above.
class Form1
{
bool showPopup = false;
void MouseHover(object sender, EventArgs e)
{
showPopup = true;
}
void MouseLeave(object sender, EventArgs e)
{
showPopup = false;
toolTip.Hide(this);
}
void MouseMove(object sender, MouseEventArgs e)
{
if (showPopup)
{
toolTip.Show("X: " + e.Location.X + "\r\nY: " + e.Location.Y,
this, e.Location)
}
}
}
Of course, you'll have to add a ToolTip with the name toolTip and associate the various methods (subroutines) with the appropriate events of your control (Form, PictureBox, etc).
we able to move windows forms when we mouse down on title bar .
but how can I move windows when mouse down in form ?
You'll need to record when the mouse is down and up using the MouseDown and MouseUp events:
private bool mouseIsDown = false;
private Point firstPoint;
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
firstPoint = e.Location;
mouseIsDown = true;
}
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
mouseIsDown = false;
}
As you can see, the first point is being recorded, so you can then use the MouseMove event as follows:
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (mouseIsDown)
{
// Get the difference between the two points
int xDiff = firstPoint.X - e.Location.X;
int yDiff = firstPoint.Y - e.Location.Y;
// Set the new point
int x = this.Location.X - xDiff;
int y = this.Location.Y - yDiff;
this.Location = new Point(x, y);
}
}
You can do it manually by handling the MouseDown event, as explained in other answers. Another option is to use this small utility class I wrote some time ago. It allows you to make the window "movable" automatically, without a line of code.
Listen for the event when the mouse button goes down in the form and then listen for mouse moves until it goes up again.
Here's a codeproject article that shows how to do this: Move window/form without Titlebar in C#
You can't use location provided in MouseUp or Down, you should use system location like this
private Point diffPoint;
bool mouseDown = false;
private void Form1_MouseDown(object sender, MouseEventArgs e)
{
//saves position difference
diffPoint.X = System.Windows.Forms.Cursor.Position.X - this.Left;
diffPoint.Y = System.Windows.Forms.Cursor.Position.Y - this.Top;
mouseDown = true;
}
private void Form1_MouseUp(object sender, MouseEventArgs e)
{
mouseDown = false;
}
private void Form1_MouseMove(object sender, MouseEventArgs e)
{
if (mouseDown)
{
this.Left = System.Windows.Forms.Cursor.Position.X - diffPoint.X;
this.Top = System.Windows.Forms.Cursor.Position.Y - diffPoint.Y;
}
}
This works, tested.
Is there any way to make the form semi-transparent while it is being moved and then become opaque when it's not being moved anymore? I have tried the Form_Move event with no luck.
I'm stuck, any help?
The reason the form loads as semi-transparent is because the form has to be moved into the starting position, which triggers the Move event. You can overcome that by basing whether the opacity is set, on whether the form has fully loaded.
The ResizeEnd event fires after a form has finished moving, so something like this should work:
bool canMove = false;
private void Form1_Load(object sender, EventArgs e)
{
canMove = true;
}
private void Form1_Move(object sender, EventArgs e)
{
if (canMove)
{
this.Opacity = 0.5;
}
}
private void Form1_ResizeEnd(object sender, EventArgs e)
{
this.Opacity = 1;
}
To do it properly I expect you'd need to override the message processing to respond to the title bar being held, etc. But you could cheat, and just use a timer so that you make it opaque for a little while when moved, so continuous movement works:
[STAThread]
static void Main()
{
using (Form form = new Form())
using (Timer tmr = new Timer())
{
tmr.Interval = 500;
bool first = true;
tmr.Tick += delegate
{
tmr.Stop();
form.Opacity = 1;
};
form.Move += delegate
{
if (first) { first = false; return; }
tmr.Stop();
tmr.Start();
form.Opacity = 0.3;
};
Application.Run(form);
}
}
Obviously you could tweak this to fade in/out, etc - this is just to show the overall concept.