General and Desktop

Maybe it's because the toolbar of the software has shortcuts like ‘ctrl+c,ctrl+e’ or something like that, where you need to press ctrl+c first and then press other keys to make it work.

Ah, thanks @Bonnie! That tool I didn't know yet. Thanks to @JonB too!

@haowong What @ChrisW67 pointed out is you are using Qt5 and Qt6 at the same time. Simply use Qt5 or Qt6, but not both.

@shreya_agrawal

It worked by installing the event filter on the table view of the calendar widget:

ui->dateEdit->calendarWidget()->findChild<QTableView*>("qt_calendar_calendarview")->viewport()

I don't know why

QMdiSubWindow:title { background-color: green; }

removes the icon.

But this works perfectly.
@Kogotoro said in how to change the color of title bar in mdi window:

QMdiSubWindow{ selection-background-color: grey;/*for some styles it also used as title bar main gradient color...*/ }

I am try to render video too,i use egl can success show the key is GL_TEXTURE_EXTERNAL_OES

Yes, it cannot be part of the layout of the main window area because the widget I have to render on top of it is semi translucent and the widgets below should be visible at the same time. Also the main window' widgets can not be moved when the game widget is shown. I don't use a stacked widget because the size between the game widget and the main window central widget is much different. That's why I render it on top of the main window and I manually resize it

Ah, got it. This is caused by the KDE Breeze style as compared to the Fusion/Windows/etc. style. Fixed it by force-setting the style to Universal.

Start your application with the QT_DEBUG_PLUGINS environment variable set to one to see if you get information about what is happening.

Hi, I have the same problem, have you solved it?

And to you, too!

Hi and welcome to devnet,

I would start by searching which application gets automatically started.
There's likely something messing up your within your PATH.

@SGaist I reread and reinterpreted the quoted statement in your post and finally got it why Qt::WA_TransparentForMouseEvents does not work for widget Y as I expected. The key part is "as if the widget and its children were not present in the widget hierarchy", so if Y is not present, then widget X will get a mouse event, which is not transparent, so mouse event won't go through X. Thanks.

@markleo said in are there only five kinds of layouts in Qt?:

Or are there only five kinds of layouts in Qt?

Yes and no.
In most cases these are the base layouts used. However there are also custom layouts with "special" behavior, like
FlowLayout from the Flow Layout Example.
That being said, you can combine the basic layout or build your own layout, if you really need something different (what you cannot reproduce using the five above).

You can refer to this code.

void my_printf(const char *format, ...) { va_list args; va_start(args, format); for (const char *p = format; *p != '\0'; p++) { if (*p == '%') { p++; // Move past '%' switch (*p) { case 'd': { // Handle integer int i = va_arg(args, int); printf("%d", i); break; } case 'c': { // Handle char char c = (char)va_arg(args, int); // char is promoted to int putchar(c); break; } case 's': { // Handle string char *s = va_arg(args, char *); printf("%s", s); break; } default: // Handle unknown format specifiers putchar('%'); putchar(*p); break; } } else { putchar(*p); // Print regular character } } va_end(args); }

The dialog literally says "Press ESC to cancel" :)

@markleo
No, it will be far more expedient to use a Python debugger and its watch windows.

Otherwise write whatever you want to display whichever variables however you want to see them from your program.

Sorry, I shared the incorrect blog post, I wanted to share this instead https://www.qt.io/blog/custom-window-decorations, though it doesn't solve much.