I haven't used Unity 3D but I gather you can use Screen.lockCursor to take control of the mouse for FPS games. Is this possible in WPF/Win32?
Obviously you have to release it when exiting or in the event of a crash
Thanks
I found the answer spread across a whole bunch of links, so
(1) Set a captureMouse flag, press once to go into this mode, again to come out,
hide the cursor while you are in there
bool captureMouse = false;
private void viewport3D1_MouseDown(object sender, MouseButtonEventArgs e)
{
if (!captureMouse)
{
captureMouse = true;
Mouse.OverrideCursor = Cursors.None;
}
else
{
Mouse.OverrideCursor = null;
captureMouse = false;
}
}
(2) While you're in this mode constantly put the mouse back to the middle of the window
private void theWindow_MouseMove(object sender, MouseEventArgs e)
{
if (!captureMouse)
return;
Point windowPoint = WpfToRealPixels(theWindow, new Point(500, 500));
NativeMethods.SetCursorPos((int)windowPoint.X, (int)windowPoint.Y);
oldP = new Point(500, 500);
}
(3) Translate the co-ords
private Point WpfToRealPixels(Window w, Point p)
{
return theWindow.PointToScreen(p);
}
(4) To put the mouse back you'll need a native Win32 call
public partial class NativeMethods
{
[System.Runtime.InteropServices.DllImportAttribute("user32.dll", EntryPoint = "SetCursorPos")]
[return: System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)]
public static extern bool SetCursorPos(int X, int Y);
}
Hope that helps someone.
Related
I'm making a web browser with CefSharp. I just implemented downloads 2 days ago but there is no progress bar to go along with the download. How do I make the progress bar show download progress?
Edit: Making things clearer
Add a ProgressBar Control to your Form and add a BackgroundWorker Component alongside it to your form. Figure out your file size first:
Int64 bytes_total= Convert.ToInt64(client.ResponseHeaders["Content-Length"])
This is code from Alex's amazing answer which can be found here:
public Form1()
{
InitializeComponent();
backgroundWorker1.DoWork += backgroundWorker1_DoWork;
backgroundWorker1.ProgressChanged += backgroundWorker1_ProgressChanged;
backgroundWorker1.WorkerReportsProgress = true;
}
private void button1_Click(object sender, EventArgs e)
{
backgroundWorker1.RunWorkerAsync();
}
private void backgroundWorker1_DoWork(object sender, System.ComponentModel.DoWorkEventArgs e)
{
//Replace this code with a way to figure out how much of the file you have already downloaded and then use backgroundworker1.ReportProgress and send the percentage completion of the file download.
for (int i = 0; i < 100; i++)
{
Thread.Sleep(1000);
backgroundWorker1.ReportProgress(i);
}
}
private void backgroundWorker1_ProgressChanged(object sender, System.ComponentModel.ProgressChangedEventArgs e)
{
progressBar1.Value = e.ProgressPercentage;
}
I'm in trouble with a Marquee ProgressBar. I need to execute a method (refreshList()) to get a List<string>. Then I assign this List to a ComboBox, so ComboBox refreshes with the new Items. As refreshList() take 3 or 4 sec, I wanted to run a Marquee ProgressBar. But I couldn't. ProgressBar is ok, but ComboBox doesn't load new Items.
My refreshList() method:
private void refreshList(List<string> list)
{
albumList.DataSource = null;
albumList.DataSource = list;
}
I have the following code, it works fine:
private void changeDirectoryToolStripMenuItem_Click(object sender, EventArgs e)
{
fbd.RootFolder = Environment.SpecialFolder.MyComputer;
folderPath = "";
if (fbd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
folderPath = fbd.SelectedPath;
refreshList(N.getList(folderPath));
}
}
But I added a ProgressBar and wrote this code:
private void changeDirectoryToolStripMenuItem_Click(object sender, EventArgs e)
{
fbd.RootFolder = Environment.SpecialFolder.MyComputer;
folderPath = "";
if (fbd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
folderPath = fbd.SelectedPath;
bgWorker.WorkerReportsProgress = true;
bgWorker.RunWorkerAsync();
}
}
And I placed refreshList() in doWork() method:
private void bgWorker_DoWork(object sender, DoWorkEventArgs e)
{
refreshList(N.getList(folderPath));
}
But unfortunately this isn't working. Can anybody help me solving this problem? Thanks in advance.
You can use the MarqueeAnimationSpeed and Value properties of the ProgressBar control to stop and start the Marquee. There's no need to use WorkerReportsProgress* as you aren't incrementing a normal progress bar - you just want to "spin" the Marquee.
You can do something like the following:
public Form1()
{
InitializeComponent();
//Stop the progress bar to begin with
progressBar1.MarqueeAnimationSpeed = 0;
//If you wire up the event handler in the Designer, then you don't need
//the following line of code (the designer adds it to InitializeComponent)
//backgroundWorker1.RunWorkerCompleted += backgroundWorker1_RunWorkerCompleted;
}
private void changeDirectoryToolStripMenuItem_Click(object sender, EventArgs e)
{
fbd.RootFolder = Environment.SpecialFolder.MyComputer;
folderPath = "";
if (fbd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
folderPath = fbd.SelectedPath;
//This line effectively starts the progress bar
progressBar1.MarqueeAnimationSpeed = 10;
bgWorker.RunWorkerAsync(); //Calls the DoWork event
}
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
e.Result = N.getList(folderPath); //Technically this is the only work you need to do in the background
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
//these two lines effectively stop the progress bar
progressBar1.Value = 0;
progressBar1.MarqueeAnimationSpeed = 0;
//Now update the list with the result from the work done on the background thread
RefreshList(e.Result as List<String>);
}
private void RefreshList(List<String> results)
{
albumList.DataSource = null; //You don't need this line but there is no real harm.
albumList.DataSource = list;
}
Remember to wire up the RunWorkerCompleted event to backgroundWorker1_RunWorkerCompleted via the Properties bar, Events section in the designer.
To begin with, we start the ProgressBar's animation by setting the MarqueeAnimationSpeed property to a non-zero positive number as part of your successful folder selection.
Then, after calling RunWorkerAsync, the code builds your list in the DoWork method, then assigns the result to the DoWorkEventArgs, which get passed to the RunWorkerCompleted event (which fires when DoWork is finished).
In the backgroundWorker1_RunWorkerCompleted method, we stop the progress bar (and set it's value to zero to effectively return it to it's original state), and then we pass the list to the refreshList method to databind it and populate the ComboBox.
Tested using VS2012, Windows Forms, .Net 4.0 (with a Thread.Sleep to emulate the time taken for N.getList)
*WorkerReportsProgress, and the associated ReportProgress method/event are used when you want to increment the progress bar - you can tell the GUI that you are 10% done, 20% done, 50% done etc etc.
How do I go about implementing the drag delta on a Shape, I have the following code:
void Connector_MouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if (e.ClickCount == 1)
{
this.Focus();
this.CaptureMouse();
this.RaiseEvent(new DragStartedEventArgs(0,0));
initMousePoint = e.GetPosition(this);
}
e.Handled = true;
}
void Shape2_MouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
currMousePoint = e.GetPosition(this);
if (this.IsMouseCaptured)
{
this.RaiseEvent(new DragDeltaEventArgs(0,0);
}
}
void Shape2_MouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
this.ReleaseMouseCapture();
}
Now for the DragDeltaEvent args do I need to compute the drag in the mousemove and pass it to the event, also is this the right way to raise the event. If this works, then I should only subscribe to the drag delta event and use it as a thumb? Note, I do not want to template the thumb with the shape, providing this answer won't help me.
note the chagnes, about the getting the position of the mouse, this I don't think works, because it gets the position relative to the element, not the containing panel, so I don't think i will be able to find the drag distance this way.
I solved it using:
currMousePoint = e.GetPosition(this);
double dragHorizontal = currMousePoint.X - initMousePoint.X;
double dragVertical = currMousePoint.Y - initMousePoint.Y;
//Set the new canvas top and left proeprties here.
I'd like to track the position of the Mouse cursor, in screen coordinates, anywhere on the screen. So even if the mouse cursor moves outside the bounds of the window, is there a way to get the position of the mouse cursor?
What I'm doing is trying to get a popup to follow the mouse cursor, even if it moves off the main window.
Here is a code snippet of what I've tried (and hasn't worked):
private void OnLoaded(object sender, RoutedEventArgs e)
{
bool gotcapture = this.CaptureMouse();
Mouse.AddLostMouseCaptureHandler(this, this.OnMouseLostCapture);
}
Point mouse_position_relative = Mouse.GetPosition(this);
Point mouse_screen_position = popup.PointToScreen(mouse_position_relative);
private void OnMouseLostCapture(object sender, MouseEventArgs e)
{
bool gotcapture = this.CaptureMouse();
this.textblock.Text = "lost capture.";
}
What exactly was your problem?
Wait! There is a way to position a Popup relative to the screen. see PlacementMode.AbsolutePoint
This showed little happy face flying around:
private Popup _popup;
public Window1()
{
InitializeComponent();
this.Loaded += OnLoaded;
}
private void OnLoaded(object sender, RoutedEventArgs e)
{
_popup = new Popup
{
Child = new TextBlock {Text = "=))", Background = Brushes.White},
Placement = PlacementMode.AbsolutePoint,
StaysOpen = true,
IsOpen = true
};
MouseMove += MouseMoveMethod;
CaptureMouse();
}
private void MouseMoveMethod(object sender, MouseEventArgs e)
{
var relativePosition = e.GetPosition(this);
var point= PointToScreen(relativePosition);
_popup.HorizontalOffset = point.X;
_popup.VerticalOffset = point.Y;
}
Never mind, I realized there is no way to position a Popup relative to the screen, only relative to the Visual which contains it.
There are a number of ways to get the screen coordinates of the mouse position outside of a WPF Window. Unfortunately, you'll need to add references to use either of them, but it is possible. You can find examples of them both in #FredrikHedblad's answer to the How do I get the current mouse screen coordinates in WPF? question. Coincidentally, that question was answered a few days before you asked this question and gave up within 21 minutes of asking.
How to get current mouse coordination on the screen?
I know only Mouse.GetPosition() which get mousePosition of element, but I want to get the coordination without using element.
Or in pure WPF use PointToScreen.
Sample helper method:
// Gets the absolute mouse position, relative to screen
Point GetMousePos() => _window.PointToScreen(Mouse.GetPosition(_window));
To follow up on Rachel's answer.
Here's two ways in which you can get Mouse Screen Coordinates in WPF.
1.Using Windows Forms. Add a reference to System.Windows.Forms
public static Point GetMousePositionWindowsForms()
{
var point = Control.MousePosition;
return new Point(point.X, point.Y);
}
2.Using Win32
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
internal static extern bool GetCursorPos(ref Win32Point pt);
[StructLayout(LayoutKind.Sequential)]
internal struct Win32Point
{
public Int32 X;
public Int32 Y;
};
public static Point GetMousePosition()
{
var w32Mouse = new Win32Point();
GetCursorPos(ref w32Mouse);
return new Point(w32Mouse.X, w32Mouse.Y);
}
Do you want coordinates relative to the screen or the application?
If it's within the application just use:
Mouse.GetPosition(Application.Current.MainWindow);
If not, I believe you can add a reference to System.Windows.Forms and use:
System.Windows.Forms.Control.MousePosition;
If you try a lot of these answers out on different resolutions, computers with multiple monitors, etc. you may find that they don't work reliably. This is because you need to use a transform to get the mouse position relative to the current screen, not the entire viewing area which consists of all your monitors. Something like this...(where "this" is a WPF window).
var transform = PresentationSource.FromVisual(this).CompositionTarget.TransformFromDevice;
var mouse = transform.Transform(GetMousePosition());
public System.Windows.Point GetMousePosition()
{
var point = Forms.Control.MousePosition;
return new Point(point.X, point.Y);
}
This works without having to use forms or import any DLLs:
using System.Windows;
using System.Windows.Input;
/// <summary>
/// Gets the current mouse position on screen
/// </summary>
private Point GetMousePosition()
{
// Position of the mouse relative to the window
var position = Mouse.GetPosition(Window);
// Add the window position
return new Point(position.X + Window.Left, position.Y + Window.Top);
}
You may use combination of TimerDispatcher (WPF Timer analog) and Windows "Hooks" to catch cursor position from operational system.
[DllImport("user32.dll")]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool GetCursorPos(out POINT pPoint);
Point is a light struct. It contains only X, Y fields.
public MainWindow()
{
InitializeComponent();
DispatcherTimer dt = new System.Windows.Threading.DispatcherTimer();
dt.Tick += new EventHandler(timer_tick);
dt.Interval = new TimeSpan(0,0,0,0, 50);
dt.Start();
}
private void timer_tick(object sender, EventArgs e)
{
POINT pnt;
GetCursorPos(out pnt);
current_x_box.Text = (pnt.X).ToString();
current_y_box.Text = (pnt.Y).ToString();
}
public struct POINT
{
public int X;
public int Y;
public POINT(int x, int y)
{
this.X = x;
this.Y = y;
}
}
This solution is also resolving the problem with too often or too infrequent parameter reading so you can adjust it by yourself. But remember about WPF method overload with one arg which is representing ticks not milliseconds.
TimeSpan(50); //ticks
If you're looking for a 1 liner, this does well.
new Point(Mouse.GetPosition(mWindow).X + mWindow.Left, Mouse.GetPosition(mWindow).Y + mWindow.Top)
The + mWindow.Left and + mWindow.Top makes sure the position is in the right place even when the user drags the window around.
Mouse.GetPosition(mWindow) gives you the mouse position relative to the parameter of your choice.
mWindow.PointToScreen() convert the position to a point relative to the screen.
So mWindow.PointToScreen(Mouse.GetPosition(mWindow)) gives you the mouse position relative to the screen, assuming that mWindow is a window(actually, any class derived from System.Windows.Media.Visual will have this function), if you are using this inside a WPF window class, this should work.
I wanna use this code
Point PointA;
private void Button_PreviewMouseUp(object sender, MouseButtonEventArgs e) {
PointA = e.MouseDevice.GetPosition(sender as UIElement);
}
private void Button_Click(object sender, RoutedEventArgs e) {
// use PointA Here
}