How to reduce gui flickering?

[fabricio234]

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+E0x02000000 +E0x00080000

Using the flags above does help a bit in pictures/gif, but when it's about tabs:

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gui, +E0x02000000 +E0x00080000
Gui, Add, Tab2,, General|View|Settings
Gui, Show

2021-05-15_12-27-20.gif (70.71 KiB) Viewed 1091 times

[mikeyww]

Here are some different approaches that I saw.

https://autohotkey.com/board/topic/92802-gui-flicker-any-way-to-fix/

https://stackoverflow.com/questions/27596207/autohotkey-flickering-gui

https://www.autohotkey.com/boards/viewtopic.php?t=77668

[fabricio234]

The first link suggests creating two guis, but I did not understand how you could "bind" both to move together.

The second link is about using guicontrol, would not help which tabs.

The third link is the option I'm already using.

Back to zero

[fabricio234]

Drawing two GUIs and binding using SetParent reduced the flickering a lot in various controls, but when I use a GUI with the option -caption and minimize/restore, sometimes it displays a red caption:

2021-05-16_03-47-21.gif (45.74 KiB) Viewed 1059 times

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gui, 2:color,a9a7a0
gui, 2: +E0x02000000 +E0x00080000 +hwndHwndParent -caption
gui, 2:show, w200 h100,abc2

gui, +Parent2 +hwndHwndChild -caption
gui, 2:show, w200 h100,abc1

I noticed that this caption is from the GUI abc1:

vlc_2021-05-16_03-43-13.png (7.32 KiB) Viewed 1059 times

[fabricio234]

Does someone know how i can hide this:

image.png (7.58 KiB) Viewed 1018 times

I noticed that this happens with any GUI that you create using -caption, just minimize/restore fast and it will be there

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gui -caption
gui,color,239829
gui,show,w200 h70

In this example, it shown a white title bar for a short

[fabricio234]

I think --SYSMENU has hidden the minimize, maximize, close buttons.
Now missing just a white bar that appears when you minimize/restore.

It can be easily reproduced with the following code:

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gui -caption -sysmenu
gui,color,099785
gui,show,w200 h70

2021-06-08_06-26-11.gif (9.01 KiB) Viewed 969 times

Just minimize/restore and it will flash a white bar where's supposed to be the title bar.
Looking for some advice on how to get rid of it.

[SKAN]

I think --SYSMENU has hidden the minimize, maximize, close buttons.
Now missing just a white bar that appears when you minimize/restore.

It can be easily reproduced with the following code:

I'm not able to reproduce it in my Windows 10 system (has decent GPU).
What is your OS?

[fabricio234]

Windows10, about gpu I have a gtx 1060.
While I was testing looks like this “white bar” only appears when the window under it had a black background (in the gif the background was vscode)
Also try with the same color in the example, according to the color its hard to see it

[SKAN]

DWM compositing is turned off for frameless windows and hence the flickering.
I'm not sure, but maybe handling WM_ERASEBKGND message could help.
Search our forum for examples.

[fabricio234]

@SKAN i don't understand what you mean.

Can you try this example:

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W := 200 ,H := 100
Gui, 2: Color,0
Gui, 2: +E0x02000000 +E0x00080000 -Caption -SysMenu
Gui, 2: Show, w%w% h%h%,XXXXXXXXXXXXXXXXXXXXX

Gui, Color,0
Gui, +Parent2 -Caption -SysMenu
Gui, Show, w%w% h%h%, GUI

Return

When I minimize/restore it show the second gui title bar

Photoshop_2021-06-13_12-32-11.png (4.52 KiB) Viewed 899 times

Trying to hide this

[SKAN]

When I minimize/restore it show the second gui title bar

I'm able to see it every time only if I remove +E0x02000000 +E0x00080000 from your code.
Otherwise, the flicker is well controlled.

[fabricio234]

But i cant remove this two option, they are there to help reduce the flickering
No other way to hide this thing from being shown?