Int iEndVisibleLine = GetLastVisibleLineIndex () įor (int iIdx = iStartVisibleLine iIdx <= iEndVisibleLine - 1 ++iIdx) Int iStartVisibleLine = GetFirstVisibleLineIndex () ***formattedText.MaxTextWidth = this.ViewportWidth // space for scrollbar***įormattedText.MaxTextHeight = Math.Max (this.ActualHeight + this.VerticalOffset, 0) //Adjust for scrollingĭrawingContext.PushClip (new RectangleGeometry (new Rect (0, 0, this.ActualWidth, this.ActualHeight))) //restrict text to textbox Protected override void OnRender ( drawingContext)įormattedText formattedText = new FormattedText (īaseForeground) //Text that matches the textbox'sĭouble leftMargin = 4.0 + ĭouble topMargin = 2 + Void txtTest_TextChanged (object sender, TextChangedEventArgs e) New FrameworkPropertyMetadata (new SolidColorBrush (Colors.Black), FrameworkPropertyMetadataOptions.AffectsRender)) Public static DependencyProperty BaseForegroundProperty = DependencyProperty.Register ("BaseForeground", typeof (Brush), typeof (CodeBox), This.TextWrapping = īase.TextWrapping = This.Background = new SolidColorBrush (Colors.Transparent) This.Foreground = new SolidColorBrush (Colors.Transparent) This.TextChanged += new TextChangedEventHandler (txtTest_TextChanged) SolidColorBrush m_brBlack = new SolidColorBrush (Colors.Black) SolidColorBrush m_brOrange = new SolidColorBrush (Colors.Orange) SolidColorBrush m_brRed = new SolidColorBrush (Colors.Red) The rest (that has been reomved) is just code that does more text-coloring. This is the code-behind C#, lengthy, but it has been trimmed down to only enough to show what's going on. I'm fairly new to WPF and there's much to it that is still mysterious to me, so the solution may be obvious to someone with more experience with it. "formattedText.MaxTextWidth = this.ViewportWidth // space for scrollbar" I've tracked the problem to a line in OnRender: The scrollbar is visible and it changes the size of the drag button to show that it sees that the unwrapped text is wider than the viewing area, but since the text has already been wrapped, dragging it doesn't make any difference. ![]() I've tried adding a horizontal scrollbar but that doesn't help. In a normal TextBox, simply setting the TextWrapping property to NoWrap does the trick, but not with CodeBox (which inherits from TextBox in code-behind). So it is indeed very hard to become an iOS developer – and even harder if you don't have enough of passion for it.I've used the CodeBox project from CodeProject and it works very well except for the fact that I can't disable text wrapping. But on the other hand users expect apps to be very fancy and powerful. Although you can build a mobile app prototype at home with a little practice (check out our tutorials here to see how easy it is), to create the final product, you're going to have to learn to code.How difficult is iOS app development?Ĭompared to normal computers all resources are very limited: CPU performance, memory, internet connectivity and battery life. ![]() There's no getting around it - building an app takes some technical training. You can also click the Run button in the top-left corner of the Workspace window. A scheme tells Xcode the purpose of the built product.Ĭhoose Product→Run from the main menu to build and run the application. In the Flow Controls section of the toolbar, choose a scheme from the Scheme pop-up menu. Swift code is safe by design, yet also produces software that runs lightning-fast.How do I create an app using Xcode? Writing Swift code is interactive and fun, the syntax is concise yet expressive, and Swift includes modern features developers love. ![]() Swift is a powerful and intuitive programming language for macOS, iOS, watchOS, tvOS and beyond. Xcode is free to download, but it only runs on Mac computers.What programming language is used to develop iOS apps? It serves as an editor for your code, as well as a debugging tool and way to preview your apps before you launch them. Build and run your app using the built-in iOS Simulator app that's included in Xcode.What software is used to create iOS apps?Īpple has its own software for building iOS apps called Xcode.
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