Quppa.net

Category: Programming

  • Theme Colours in Windows ‘Blue’

    As I noted in my earlier post, the method for selecting theme (‘accent’) colours in Windows ‘Blue’ build 9364 has changed from Windows 8 RTM. I’m not going to bother looking too closely at the updates to the functions in UxTheme.dll this early in the development process, but I did notice two new registry values…

  • Native Tooltips in WPF (Part 2)

    View source on GitHub. In part 1 of this article I looked at the differences between WPF tooltips and ‘native’ (Win32) tooltips. In this part I present a sample WPF application that displays native tooltips. I’d planned to walk through some of the code here, but that turned out to be a bit tedious, so…

  • Windows ‘Blue’ Build 9364 Observations

    Update (2013-04-21): the thin borders are all gone in build 9374. It looks like Microsoft isn’t changing tack with the next release of Windows – the recently leaked build 9364 of Windows ‘Blue’ contains a bunch of worthwhile changes to the Modern/Metro/Immersive environment, but the desktop seems to be basically untouched from Windows 8. If…

  • Native Tooltips in WPF (Part 1)

    View source on GitHub. <preamble> One of my hobbies is getting WPF controls to look more like their native counterparts. I’ve been shoehorning the UxTheme APIs (and older equivalents when theming is unavailable) into something that can be used by WPF over the past year or more, and I’ll write about this process at some…

  • WPF ToolTip Drop Shadows in Windows 8

    The standard ToolTip control template for the Windows 8 theme in WPF (‘Aero2’) has no drop shadow, whether or not the HasDropShadow property is set. The background colour and margins are also slightly off compared to the native style. The following template produces a result that’s closer to the real thing: <Style TargetType="{x:Type ToolTip}"> <Setter…

  • SetDPI Utility Version 2

    View source on GitHub. A couple of years ago I made a small command-line program for setting the DPI/PPI of PNG files. I used the System.Drawing.Bitmap class (i.e. GDI+) to set this property, which had the unfortunate side effect of producing relatively bloated files. Given that the chunk specifying this property is only 21 bytes…

  • Image Background Remover Tool

    View source on GitHub. Inspired by Window Clippings, my preferred screenshot tool (which unfortunately crashes a lot under Windows 8 RTM), I wrote a small program for making image backgrounds transparent. It comes with a command-line interface and a basic GUI (pictured above). The GUI supports dragging-and-dropping images, and you can switch the black and…

  • Windows Update Notification Tool for Windows 8

    I was apparently part of the 5.82% of Windows 7 users who preferred to be notified about updates rather than have them installed automatically. Annoyingly, Windows 8 no longer displays the familiar balloon tip and notify icon when new updates are available, instead placing a notice on the lock screen (which I almost never have…

  • Pixel-perfect Multi-DPI Images in WPF (Part 3)

    View source on GitHub. In Part 1 of this series, I discussed the problem of displaying different bitmap images at different DPIs in WPF. In Part 2, I proposed a solution using multi-frame TIFFs and two simple markup extensions. In this final post I will present a basic program that takes multiple images (PNG recommended),…

  • Pixel-perfect Multi-DPI Images in WPF (Part 2)

    View source on GitHub. See also: Part 1 and Part 3. In Part 1 of this series, I explored the issue of displaying pixel-perfect bitmap images in the Windows Presentation Foundation. In this article, I’ll describe a method of displaying different images depending on the system DPI setting using a custom Markup Extension and multi-image…