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Determine if window is visible with High CPU


Determine if window is visible with High CPU

By : Vidal
Date : October 24 2020, 06:10 PM
To fix this issue Background ,
if the window was fully drawn and visible to the human eye?
code :


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How can I determine whether a window from another application is visible?

How can I determine whether a window from another application is visible?


By : Tuan Hung Nguyen
Date : March 29 2020, 07:55 AM
around this issue Have you tried using IsWindowVisible() instead?
High CPU usage when GLFW / OpenGL Window isn't visible

High CPU usage when GLFW / OpenGL Window isn't visible


By : KE Huydiet
Date : March 29 2020, 07:55 AM
Does that help Your render loop is executed no matter what mimimization state of your window is.
If you want to stop rendering, you have to enhace the application logic a bit to track the state your window is in. GLFW supports user-defined a callback for such things with glfwSetWindowIconifyCallback() so your application can get noticed when the window is minimized or restored. You can the decide to stop the render loop, and can use glfwWaitEvents() to wait for something to happen (like the window being restored) without using all available CPU time.
How to determine whether a Window is visible on the screen with AHK?

How to determine whether a Window is visible on the screen with AHK?


By : nosepicker
Date : March 29 2020, 07:55 AM
I hope this helps . As an alternative to checking whether the window is visible, you can compare the window text contents over time and determine whether it should be enough for you.
On this example, I am checking the Media Player Home Cinema window playing time to determine whether I should press the Media Play/Stop button, or focus on the Media Player Home Cinema window and press Space (to play/stop it directly):
code :
Pause::
window_identifier = ahk_class MediaPlayerClassicW
WinGetTitle, window_title, %window_identifier%

if( !window_title ) {
    Send {Media_Play_Pause}
}
else {
    WinWaitActive, %window_title%, , 0.1
    is_window_focused := true
    if( ErrorLevel ) {
        ; MsgBox, WinWait timed out.
        is_window_focused := false
    }
    else {
        PlayPauseVideo()
        return
    }

    counter := 5
    first_result := GetRunningWindowText(window_title)

    while( counter > 0) {
        sleep, 200
        counter := counter - 1
        second_result := GetRunningWindowText(window_title)

        if( first_result != second_result ) {
            PlayPauseVideo()
            return
        }
    }

    if( is_window_focused ) {
        PlayPauseVideo()
    }
    else {
        Send {Media_Play_Pause}
    }
}
GetRunningWindowText(window_title) {
    WinGetText, window_text, %window_title%

    ; FoundPos := RegExMatch(window_text, "O)(?:\d\d:)+(?<frames>\d\d)", first_result)
    FoundPos := RegExMatch(window_text, "O)drawn: (?<frames>\d+)", first_result)

    ; Msgbox % first_result.Count() ": " first_result.Name(1) "=" first_result["frames"]
    return first_result["frames"]
}

PlayPauseVideo() {
    ; Msgbox, It is running video...
    WinActivate, ahk_class MediaPlayerClassicW
    Send {Space}
}
return
Pause::CheckForPlayerWindow("ahk_class MediaPlayerClassicW",
        "{Media_Play_Pause}", "{Space}", "false")

^!Left::CheckForPlayerWindow("ahk_class MediaPlayerClassicW", "{Media_Prev}", "^p")
^!Right::CheckForPlayerWindow("ahk_class MediaPlayerClassicW", "{Media_Next}", "^n")


; https://stackoverflow.com/questions/55670223/how-to-determine-whether-a-window
CheckForPlayerWindow(window_identifier, media_key, player_key, reactive=true) {
    WinGetTitle, window_title, %window_identifier%

    if( !window_title ) {
        Send % media_key
    }
    else {
        WinWaitActive, %window_title%, , 0.1
        is_window_focused := true

        if( ErrorLevel ) {
            ; MsgBox, WinWait timed out.
            is_window_focused := false
        }
        else {
            PlayPauseVideo(window_identifier, player_key, reactive)
            return
        }

        counter := 5
        first_result := GetRunningWindowText(window_title)

        while( counter > 0) {
            sleep, 200
            counter := counter - 1
            second_result := GetRunningWindowText(window_title)

            if( first_result != second_result ) {
                PlayPauseVideo(window_identifier, player_key, reactive)
                return
            }
        }

        if( is_window_focused ) {
            PlayPauseVideo(window_identifier, player_key, reactive)
        }
        else {
            Send % media_key
        }
    }
}
GetRunningWindowText(window_title) {
    WinGetText, window_text, %window_title%

    ; FoundPos := RegExMatch(window_text, "O)(?:\d\d:)+(?<frames>\d\d)", first_result)
    FoundPos := RegExMatch(window_text, "O)drawn: (?<frames>\d+)", first_result)

    ; Msgbox % first_result.Count() ": " first_result.Name(1) "=" first_result["frames"]
    return first_result["frames"]
}

PlayPauseVideo(window_identifier, player_key, reactive=true) {
    ; Msgbox, It is running video...

    if( reactive == true ) {
        WinGetActiveTitle, active_window_title
    }

    WinActivate, %window_identifier%
    SendInput % player_key

    if( reactive == true ) {
        WinActivate, %active_window_title%
    }
}
return
What is the best way to determine if a window is actually visible in WPF

What is the best way to determine if a window is actually visible in WPF


By : user3751654
Date : March 29 2020, 07:55 AM
wish help you to fix your issue You may not want to rely on whether a window is obstructed as there are many factors that can change the window size, positing, etc. and all of them tie into accessibility features which add even more complexities.
Instead, you may want to check whether or not the window has focus. This is how MSN Messenger knows whether or not to flash orange in the taskbar; it fires a notification and if it doesn't have focus, the taskbar flashes.
Determine if a window is visible or not using C#

Determine if a window is visible or not using C#


By : Gaurav Rathi
Date : March 29 2020, 07:55 AM
it should still fix some issue IsWindowVisible Function:
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