When I set icons for my Qt application I can provide *.png files and use QIcon("icon.png"), However, I want to use standard icons that were provided by the distribution and configured by the user. e.g. those from /usr/share/icons/. So that it respects the system's icon theme.
What method should I use to make the Qt application use the system's icon theme?
Indeed, freedesktop.org has an Icon Theme Specification document that defines the notion of icon theme and defines an algorithm to search for specific icons. Qt follows this spec in its implementation, and as mentioned by #eyllanesc QIcon::fromTheme() static method can be used to lookup needed icons.
Another relevant document, by the way, is Icon Naming Specification, which defines some well-known names for most often used icons.
Related
I'm developing a C++ app in Visual Studio 2022 with a UI (UI library is wxWidgets). I'm trying to figure out how icons work. I gathered from researching that Windows expects a variety of different icons to be packaged with apps for the best UX (see Which icon sizes should my Windows application's icon include?). However I can't seem to find a way to get multiple icons taken into account.
My understanding so far is that all resource related things, including icons, are controlled by Resource.h and <projectName>.rc, both of which are initially provided by the VS template for a C++ App.
I've removed the provided icons (i.e the "normal" and "small" ones) and have instead imported many icons, one for each size, in the Resource View.
But regardless of that, always one icon seem to be used at a time.
Checking the contents of <projectName>.rc, I see the following:
I also expect the following, in Resource.h, to be relevant:
It seems that independently of the icon sizes, IDI_ICON1 is used. If it's 16x16, it's upscaled in context that requires it, if it's 256x256, it's downscaled (poorly, somehow ?) when required i.e in almost all contexts.
How should this be done ? Are there resources available on the matter I may have missed ?
You should embed all your ico files with different resolution into one ico file. The ico file is actually a container and can contain multiple images inside.
Which setting in an MFC app controls the title shown in the windows 7/8 jump-list, just below the actual list of jumps, above the pin application option?
This is mainly so that a localised string can be used for non-english systems.
My first thought on this problem was that it could be set in the version resource file, although adding a new localised section (sweden in this case) and setting the description/file name does not seem to affect the text i'm interested in.
Finally figured this one out, the name used here and in several other places is set in a registry key for the application at
[HKEY_CLASSES_ROOT\Applications\AppName.exe]
"FriendlyAppName"="This text is shown"
Some documentation can be seen here: https://msdn.microsoft.com/en-us/library/windows/desktop/ee872121(v=vs.85).aspx#applications
Is there a simple way in C++ (and if yes, how to do it, preferably within Visual Studio VS2012) to set different font properties (size, type, bold, etc) for different elements of one dialog window (button, static text, title, etc)?
The font properties of a dialog window can be modified in its 'properties' dialog in VS2012, but they are then applied to all the window elements.
My need is to emphasize some information wrt other in the same window, e.g. to make it visually easier to differentiate labels from variable values, and static from modifiable variables.
Thanks for any help.
In a recent and well written article, John Morrison Leon presents his solution which precisely addresses this issue and more.
On top of enabling the wished for possibilities with formatting, it offers a whole new way to easily create and use dialog windows, purely C++ (Win32 without MFC or ATL/WPL, independent of the IDE, mapping at compile instead of run time).
The piece is a rather detailed tutorial, licensed under The Code Project Open License (CPOL). It contains all C++ source code (37.2kB zip) and examples (80+kB). It has won Best C++ Article of May 2015 (First Prize).
------------- some excerpts quoted from this (long) article -----------------------
An alternative approach in which dialogs are entirely specified as C++ code that requires neither IDE support to be written nor IDE generated resources to be executed. Powered by the C++ type system.
The fundamental difference with the approach presented here is that your code does all the work of creating the dialog rather than have Windows create a dialog from a dialog template resource that you then attach code to. There is no need for dialog or control ID's because there is no run-time mapping of code to a dialog template. Instead there is compile time mapping of each control to a C++ variable. Furthermore each of those variables has its own unique data type. Such rich typing is perhaps radical but it brings many benefits and is key to the design. It allows the C++language to resolve many issues at compile time through type resolution and this reduces and simplifies the code that you have to write. In practice this means that for every variable representing a control, say btnCancel, a unique data type will be generated with the same name prefixed by an underscore _btnCancel.As you will see, there are times when you will need to refer to a control by its data type _btnCancel rather than its variable name btnCancel.
The unfamiliarity of coding a layout instead of dragging and dropping it is dealt with in the next section and after that, most things are simpler, cleaner and more concise than you are probabaly used to.
There are some other innovations including:
•all control variables carry a dynamic text dynamic text buffer as_text through which the controls window text may be read and written, and which persists when the dialog is closed.
•support for non-windows controls that are simply painted onto the dialog and respond to mouse events. (examples are provided for some cases where this makes more sense).
•support for imposing aesthetic metrics (button sizes, spacing, colours, control styles etc.) at an application level on all dialogs hosted.
•replacement of the notion of 'Anchors' with Expand_X and Expand_Y styles for controls that can benefit from being enlarged if the dialog window is enlarged.
•some modest but effective streamlining of Win 32 programming with controls.
I'm new to visual studios and I just created this very short calculator and I want to put it on mediafire for people to download but I wanted to change the icon..
I've heard that you select your app in solution explorer and Project>Properties
But my properties menu seems different.
It saids calculator property pages.
It doesnt have the tabs like ~Publish~ or ~Applications~ where people said you change your icon.
My properties is like this:
Configuration: Active(Debug)
and some other stuff below it some complicated stuff(to me)
Why doesnt mine have what other people have? I just want to share my first ever app with a custom icon. Help please, will appreciate it.
Create a text file, rename it res.rc, edit it to contain the line:
201 ICON "myicon.ico"
Add that file to your project. The file myicon.ico must exists.
Note: This is a bit hacky, the numerical vaulues should preferably be defined in a header.
You might be confused because Visual Studio supports different languages, and its UI is not consistent across those languages. Since you tagged it C++, the "old" rules apply. An application icon is a so-called resource.
You have to provide an .ico file, and reference it in a .rc file. The resource compiler (RC) compiles it into a .res file, and the linker then adds it to the EXE.
In C++, if you open the form in designer view, the properties window has an icon property that will allow you to browse for the icon of your choice.
Just for reference, i spent two hours trying to change it without any success until i resized the icon, it should be 32x32 and another one for small icon -not sure if its necessary though- with 16x16.
visual studio creates two icons when create the project , one is called small.ico and one is name yourexe.ico, just replace those and make sure to have correct sizes.
I was wondering how i can embed a third party font into my app( and use it ) so i can distribute my app with the font of my choice for users who do not have the font installed on their systems. Is this possible, or do i have to distribute the font if i want the users to be able to use the font in question. Thanks.
Stick the actual font file into a User-Defined Resource.
Very few fonts will have a license that allows this. Even a free font should be checked.
You can use CreateScalableFontResource and AddFontResource to make a font file available to your application. The font must be available as a separate file for this to work.