frameworkelement

How to get whether richtextbox last word is BringIntoView(shown) or not in WPF?

由 谁都会走 提交于 2019-12-12 05:13:10
问题 i am working in wpf,i have a richtextbox with some contents.if the contents are exceeded to richtextbox i want to hide bottom border.if the content within the richtextbox i want to show the bottom border.Now i am using the below code to bring the exceeded content to view in richtextbox. FrameworkContentElement fce = (startPos.Parent as FrameworkContentElement); if (fce != null) { fce.BringIntoView(); } But i want to display the bottom border,once the last word shown in that richtextbox.How to

Line is not displayed on startup but becomes visible on resize (WPF)

由 我是研究僧i 提交于 2019-12-11 21:18:12
问题 I have a WPF application where a line shape is only displayed when the application window is resized, as shown here: The red line is drawn on-the-fly, it is not defined in XAML. It displays fine. The blue line is defined in XAML, but its dimensions are changed within the OnRender() call. If its dimensions are not changed, or if only some of its dimensions are changed, the blue line is displayed on startup. But when all the dimensions of the blue line are changed, it is not displayed on

Removing FrameworkElements on Animation Completion

由 佐手、 提交于 2019-12-11 10:47:39
问题 I've been teaching myself WPF through Sells/Griffiths' "Programming WPF", and I've found it a great resource, but I'm trying to take some of the concepts they've introduced me to and go a step further, and I'm running into a conceptual snag on how to put the pieces together to accomplish what I'm trying to do. In this exercise, I'm trying to create self-terminating animations; FrameworkElement s that are created by Events, perform an animation, and then delete themselves. I'm having problems

How to deinitialize a FrameworkElement?

由 眉间皱痕 提交于 2019-12-11 03:47:43
问题 We have a class which derives from FrameworkElement and which is not under our control. This class registers eventhandlers in the OnInitialize method. What is the pattern to properly clean this class up, since FrameworkElement does not provide a counterpart to OnInitialize? It remains rooted since no part of it removes the EventHandler causing a leak. 回答1: There's no such thing as "deinitializing". Initialization methods are used when it isn't possible to fully initialize an object in its

UIElement vs FrameworkElement in WPF/Silverlight

由 守給你的承諾、 提交于 2019-12-06 18:21:24
问题 When do I derive from UIElement and FrameworkElement considering FrameworkElement inherits UIElement . Can anyone give real life examples? 回答1: This is a good page for learning about WPF Architecture, and this answer only applies to WPF. Check out the UIElement and FrameworkElement sections, as well as the rest if you have time. Here's a quote from the linked page explaining why the 2 levels exist: To this point in the topic, "core" features of WPF – features implemented in the

How to programmatically access ToolTipService of a Silverlight FrameworkElement?

由 送分小仙女□ 提交于 2019-12-06 00:18:41
问题 We have a languaging mechanism that recurses through our XAML pages when they load, examines each element for a Tag property and uses its value to retrieve a string resource to apply to the element. It doesn't currently support tooltips and we have to have specific code on each page to apply the languaged resources to them. I'm trying to add this functionality to our recursive mechanism. So I am recursing through the tree and for each element that is a FrameworkElement , I want to know

How do I programmatically get the current Visual State of a WPF FrameworkElement?

由 爱⌒轻易说出口 提交于 2019-12-05 13:37:56
问题 How do I programmatically get the current Visual State of a WPF FrameworkElement? And by state I mean the states like "Normal", "MouseOver", "Disabled", etc. EDIT: Basically, I am changing the Visual state of a button with VisualStateManager.GoToState(e, "MouseOver", true); , and I want to know what state to change it back to after I am done. 回答1: I think you have to know/remember the button state by yourself. VSM just displays the state in which the button is by GoToState method. Edit: I've

How to programmatically access ToolTipService of a Silverlight FrameworkElement?

由 ￣綄美尐妖づ 提交于 2019-12-04 06:31:10
We have a languaging mechanism that recurses through our XAML pages when they load, examines each element for a Tag property and uses its value to retrieve a string resource to apply to the element. It doesn't currently support tooltips and we have to have specific code on each page to apply the languaged resources to them. I'm trying to add this functionality to our recursive mechanism. So I am recursing through the tree and for each element that is a FrameworkElement , I want to know whether it has a ToolTipService and if so whether that ToolTipService has a ToolTip element. If it does I

Specified element is already the logical child of another element. Disconnect it first

由 那年仲夏 提交于 2019-12-04 02:59:42
问题 here is the error I have when I want to attach a FrameworkElement to a new Window to publish it to a PNG file. So my idea is to remove the parent-child link, call my method, and add the child again with this code : this.RemoveLogicalChild(element); PublishFrameworkElement(element, stream); this.AddLogicalChild(element); But I got the exact same error... I looked a lot of questions about this error, here on SO, but none answered to my problem What am I missing ? EDIT : here is the code that

How do I programmatically get the current Visual State of a WPF FrameworkElement?

由 自闭症网瘾萝莉.ら 提交于 2019-12-04 01:56:47
How do I programmatically get the current Visual State of a WPF FrameworkElement? And by state I mean the states like "Normal", "MouseOver", "Disabled", etc. EDIT: Basically, I am changing the Visual state of a button with VisualStateManager.GoToState(e, "MouseOver", true); , and I want to know what state to change it back to after I am done. I think you have to know/remember the button state by yourself. VSM just displays the state in which the button is by GoToState method. Edit: I've just found an article how to create a custom VSM that remembers control states. I feel you've missed the
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