I am using MSchart control to plot point that arrive by using serialPort (class) with DataReceived event, I use this method to thread safe plot points that arrive:
this.Invoke((MethodInvoker)(() =>{
Serie.Points.AddXY(daux1.CoordenadaX, daux1.CoordenadaY);
}));
I use RadDock control with:
tooltabStrip
DocuemtnTabStrip
toolTabStrip (this get frozen) docked in this order
If I get floating docked window 3, gets responsive, if dock it again get frozen
I dont know what i am doing wrong.
Related
I have wpf project with one Window (MainWindow). Depending upon the config file it shows one of two UserControl's as Content. It may be a horizontal (1920x1080) control or vertical (1080x1920) control. It's fine with horizontal screen, but when vertical is loaded I would like to do:
1) rotate window/control by 270 degrees
2) change primary screen orientation
I would prefer to just rotate application and don't interact with windows API. I can't change orientation manually, because I have only remote access to this computer.
You can not rotate the Window object itself, as it is positioned by the window management system built in Windows. You can, however, transform (and thus rotate) any FrameworkElement inside the window. This includes, but is not limited to, the Grid, the Button and the TextBox elements.
All you need to do is edit the LayoutTransform property on the element you want to rotate, which is most likely the root element in your window. Set the rotation to 270/-90 degrees and WPF will automatically rotate your UI.
Because you are using the LayoutTransform property, the layout system will also scale you UI correctly. The RenderTransform property causes the control to first be rendered, then be rotated.
YES WE CAN CHANGE SCCREEN ORIENTATION USING
DEVMODE & using System.Runtime.InteropServices;
its bit late to reply but I am replaying for the new ones , if someone com across this article for change screen rotation in C# or VB .
Please use the link given below to get help Mr. Hannes Completely write an article to change screen rotation and luckily its working fine for me (Windows 11) as now of..
https://www.codeguru.com/dotnet/creating-a-screen-rotator-in-net/
I've got a drawing area inside a scrolled window (with convenience viewport),
and this drawing area updates itself according to incoming motion-notify-events.
When I scroll the area though obviously no motion events are emitted,
but I wanted to work around this, and so tried to connect the drawing area's
"scroll-event" signal to the same motion-notify callback.
The problem I'm facing here is that this signal is emitted before the scrolled window
has update its viewport, so in the callback, I end up with pointer coordinates that were true just before scrolling, making it look like the drawing area is always "lagging a step behind" the actual pointer when scrolling while not moving the pointer itself.
I thought I could compensate for this by manually extracting the coordinates with gdk_window_get_pointer, but then I realized this cannot work as the pointer is technically still at its old position when the callback is commencing.
I also tried using g_signal_connect_after in hopes it would have the callback get called after the viewport was scrolled, but it didn't help.
My last hope would be to start a timer on scroll-events, and have the callback fire after a minimal amount of time, but this sounds realllly ugly, and I'd like to avoid that at any cost.
Any ideas as to how this could be realized?
Thanks in advance!
A solution would be to connect to the "value-changed" signal of the GtkScrolledWindow
adjustments.
Source: https://mail.gnome.org/archives/gtk-app-devel-list/2011-September/msg00014.html
Our application has a number of objects on a canvas; the canvas is contained in a scroll viewer. We also have a slider control and some buttons, always centered at the top of the window.
I am trying to print the application by capturing a bitmap of the app, but without any 'decorations' -- slider, buttons, or scroll bars.
_scrollViewer.HorizontalScrollBarVisibility = ScrollBarVisibility.Hidden;
_scrollViewer.VerticalScrollBarVisibility = ScrollBarVisibility.Hidden;
var s = xSlider;
s.Visibility = Visibility.Collapsed;
var b = xPlusButton;
b.Visibility = Visibility.Collapsed;
b = xMinusButton;
b.Visibility = Visibility.Collapsed;
b = xButton;
b.Visibility = Visibility.Collapsed;
The slider and buttons are hidden, as expected, but the scrollbars are not.
I suspect the application needs to redraw the layout in order to hide the scrollbars. Is there a way to make that happen? This is made more complicated by the fact that the print operation in SL 4 must be initiated by a UI gesture; there is no way (AFAIK) to initiate programatically, so this redraw must happen in one of the PrintDocument event handlers.
Thanks for any suggestions....
Try following,
canvas.InvalidateMeasure();
canvas.InvalidateArrange();
You can alternatively use WritableBitmap to capture runtime image and send image to print document if in case print document is ignoring render transform.
Also if you are using WritableBitmap to capture the element then you should give RenderTransform as second argument. Can you post your code to capture screen?
In addition to the InvalidateMeasure and InvalidateArrange methods, as suggested by Akash, you can try the UpdateLayout method.
The two invalidate methods will mark the control's measure or arrange as needing to be executed again, but won't necessarily do it immediately. The UpdateLayout will force it to execute some updates immediately.
It's a bit of a black box, so you may need to invalidate then call UpdateLayout. Sometimes you may just need to call UpdateLayout.
I have just created a simple animation. Lets say that in one frame I have an image of the world. I would like to create an event when a certain country is chosen. How can I allow for the event to be triggered by clicking on one particular country in an image? e.g. just displaying the name of the country, etc
Thank you
Extra info: In other words I am trying to split my image into regions using Blend...Do I need to "Clip the image"? I clipped part of the image but dont know what to do now. can anyone help me please?
If you just want "hotspots" over the image that you can click on, you could simply draw some shapes over the areas and set their opacity to 0 then handle the mouse events on them(don't change visibility to collapsed, since that will mean they won't received any mouse events)
I'm trying to modify the default graph viewer of the Graph# library because its user interface is awful (just try dragging a node outside of the boundaries, you'll see!)
The basic setup is this: there is a GraphCanvas control (inherited from Panel) which has children of Vertex and Edge control types. What I want to achieve is:
GraphCanvas has scroll bars if the contents do not fit in the screen;
GraphCanvas can also be scrolled by "dragging" it (just click on an empty space and drag);
GraphCanvas can be zoomed in and out (via CTRL+mouse wheel);
Vertices can be dragged around. If a vertex is dragged outside the current boundaries of GraphCanvas, the boundaries are increased. The scroll bars should reflect this, however the current viewport should not scroll away while the vertex is being dragged . The same goes if dragging a vertex reduces the boundaries of GraphCanvas - it should stay the same size until the drag operation is finished and resize only then. Automatically scrolling the viewport during a drag operation is awfully confusing and easily introduces dragging errors. See the original implementation if you want to know what I mean.
Although I've got a fair bit of experience with .NET, I'm still a complete beginner in WPF. My current attempt is (in the measure/arrange layout phase) to give each vertext the XY coordinate it desires (even if negative) and implement zooming/scrolling by handling mouse events on the GraphCanvas and modifying the RenderTransform property. Dragging just changes the XY coordinates on the specific vertex (probably triggering the re-layout of the whole thing which would be nice to avoid too). Scrollbars are implemented by placing the GraphCanvas inside a ScrollViewer and implementing IScrollInfo on the GraphCanvas.
Unfortunately there seems to be a problem: I can get mouse events on the GraphCanvas itself only if it has a background at the point. That would be OK, I want a white background anyway, but in the negative coordinates of the GraphCanvas it does not draw the background - and thus does not respond to mouse events.
I'm also wondering if I'm doing the Right Thing by allowing all my child controls (vertices and edges) to go into negative coordinates. How would you implement this?
Added: To clarify about the background problem check out the following screenshot:
(source: valts.21.lv)
What you see here is a simple Windows Forms form with a WPF Host control on it. That has a ScrollViewer in it, and the ScrollViewer has the GraphCanvas in it. The GraphCanvas contains 4 vertices and 6 edges.
The GraphCanvas is stretched to fill the ScrollViewer. But since some of the vertices are at negative coordinates, it has a RenderTransform applied which simply shifts everything to the right (TranslateTransform). It also has a white background brush.
Note the gray area on the left. That's still a part of the GraphCanvas, but the background brush somehow doesn't exted there. Also, if I left-click there with my mouse (not on a node, but on the gray area), I do NOT get an event. If I left-click on the white area, I get all events just fine.
Call CaptureMouse on canvas.mouseDown and ReleaseMouseCapture on mouse up. Also, if you set your canvas background to transparent it will still be hit testable
You can attach a 'Draggable' behavior to each element.