Questions from Beginners MQL5 MT5 MetaTrader 5 - page 1211

[Vitaly Muzichenko]

Question:

Only 1920x1080 monitors are available

How can I emulate 4K resolution to adjust button and font sizes for 4K monitors?

[Alexey Viktorov]

Vitaly Muzichenko:

Question:

Only 1920x1080 monitors are available

How can I emulate 4K resolution to adjust button and font sizes for 4K monitors?

I thought about this while creating an EA with a panel, but got lazy. In general, the idea was to make the monitor resolution smaller and see how it would look. If it looks normal when zoomed out, it should also change normally when zoomed in.

[Vitaly Muzichenko]

Alexey Viktorov:
I once thought about this while making an EA with a panel, but got lazy. In general, the idea was to make the monitor resolution smaller and see how it would look. If it looks normal when zoomed out, it should also change normally when zoomed in.

Here's 4K and1920x1080

[Alexey Viktorov]

Vitaly Muzichenko:

Here's 4K and1920x1080

And if you set the resolution to 1280x720 what will these buttons be? Here's a test case.

Of course, it's easier to buy a monitor. But it is more expensive. And it is a lot of trouble to fiddle with setting the screen resolution.

Did you see an example of calculating the scaling coefficient in the documentation?

//--- создаём кнопку шириной 1.5 дюйма на экране 
int screen_dpi = TerminalInfoInteger(TERMINAL_SCREEN_DPI); // получим DPI монитора пользователя 
int base_width = 144;                                      // базовая ширина в экранных точках для стандартных мониторов c DPI=96 
int width      = (button_width * screen_dpi) / 96;         // вычислим ширину кнопки для монитора пользователя (с учётом его DPI) 
... 
  
//--- вычисление коэффициента масштабирования в процентах 
int scale_factor=(TerminalInfoInteger(TERMINAL_SCREEN_DPI) * 100) / 96; 
//--- использование коэффициента масштабирования 
width=(base_width * scale_factor) / 100;

Maybe it is not necessary to adjust and check at all?

[Vitaly Muzichenko]

Alexey Viktorov:

And if you set the resolution to 1280x720 what will these buttons be like? Here's a test case.

Of course, it's easier to buy a monitor. But it is more expensive. And fiddling with setting the screen resolution is a hassle.

Did you see an example of calculating the scaling factor in the documentation?

Maybe fitting and checking isn't necessary at all?

It does not work and there is no idea how to emulate 4K

1280х720

2560х1440

[Alexey Viktorov]

Vitaly Muzichenko:

It doesn't work and no idea how to emulate 4K

1280х720

2560х1440

What's not working? My fantasy about changing the screen resolution?

[Vitaly Muzichenko]

Alexey Viktorov:
What's not working? My fantasy about changing the screen resolution?

Yes, absolutely right.

Haven't tried the code yet.

[Igor Zakharov]

Vitaly Muzichenko:

Yes, absolutely right.

Not tried the code yet

https://www.mql5.com/ru/forum/324812#comment_13650469

is there a topic like this?

that must be the answer:

https://www.mql5.com/ru/forum/324812/page6#comment_14073023

[Alexey Viktorov]

Igor Zakharov:

https://www.mql5.com/ru/forum/324812#comment_13650469

is this the kind of topic you want to highlight?

that must be the answer:

https://www.mql5.com/ru/forum/324812/page6#comment_14073023

And the discussion ended up there on the application of

TerminalInfoInteger(TERMINAL_SCREEN_DPI);

[Vitaly Muzichenko]

Igor Zakharov:

Alexey Viktorov:

And eventually the discussion there stopped at the use of

Ok, I'll look for a mon with 4K