Run code when window appear or resizes

[Almost_there]

Hi.

Cannot write a topic long enough to make sense, so please read.

When writing simple javascripts for the web browser, you can include function that runs when a spesific action takes place, such as when a window change it size.

Therefore I would love if there was possible to make a function run only when resizing a window like this:

Code: Select all

#OnWindowChangeSize, Notepad
 ; This code runs once after Notepad program window has being resized 
return

Of course I can make a timer to check every n'te millisecond and then take action. However having #OnWindow... followed by some action to wait for, will make it so much easier to write smaller scripts.

Other similar functions (not as in scripting) could be:

• #OnWindowMaximize
• #OnWindowMinimize
• #OnWindowAppear (if it was minimized, or program just started up)
• #OnWindowMove
• #OnWindowDisappear
• #OnWindowsLoseFocus
• #OnWindowsGetFocus

Thanks

[guest3456]

can probably do this with a ShellHook

[fincs]

As guest3456 said, this can be implemented easily in script:

Code: Select all

#Persistent
DllCall("RegisterShellHookWindow", "ptr", A_ScriptHwnd)
OnMessage(DllCall("RegisterWindowMessage", "str", "SHELLHOOK"), "MyShellHook")

MyShellHook(eventType, argument)
{
    return 0
}

[joedf]

I have been looking to catch the maximize event a long time ago..
but the tooltip doesnt change when dragging or maximize

Code: Select all

#Persistent
gui +resize +hwndhGUI
gui,show,w345 h345
return

guiclose:
exitapp

DllCall("RegisterShellHookWindow", "ptr", hGUI)
OnMessage(DllCall("RegisterWindowMessage", "str", "SHELLHOOK"), "MyShellHook")

MyShellHook(eventType, argument)
{
tooltip %A_now%
    return 0
}

[Almost_there]

Hi.

I appreciate your answer very much. But I'm afraid I'm just too much newbie to Autohotkey to fully understand how to implement in my script.

Code: Select all

#IfWinActive, myProgramWindow

!a::
 ; my code goes here
return

; I want to modify this to call up a MsgBox when "Notepad" start running.
DllCall("RegisterShellHookWindow", "ptr", hGUI)
OnMessage(DllCall("RegisterWindowMessage", "str", "SHELLHOOK"), "MyShellHook")

Thanks

[HotKeyIt]

I have been looking to catch the maximize event a long time ago..
but the tooltip doesnt change when dragging or maximize

Min/Max works only when minimizing and restoring from minimized state as far as I undstand.

[joedf]

what about window sizing... I was dragging the sides... But still the tool tip doesn't appear...

[HotKeyIt]

As I understand there must be another hook that does not call CallNextHookEx so we never receive the message, see here.

[joedf]

Oh ok.... Hmmm thanks

[Almost_there]

Cannot find enough documentation to get this to work. Can you alter tis code so that it runs as intended?

Code: Select all

DllCall("RegisterShellHookWindow", "ptr", A_ScriptHwnd)
OnMessage(DllCall("RegisterWindowMessage", "str", "SHELLHOOK"), "MyShellHook")

MyShellHook(eventType, argument)
{
    MsgBox, Message to appear soon as Notepad window appear
    return 0
}

[Almost_there]

Bump
Hope you don't arrest me for awakening this zoombie thread.

The time I wrote the thread I hadn't learn about making Gui's, and now reading the same thread get me assume the question was about Authohotkey GUI's.

The intention (an example) was to detect when image size of window Notepad.exe changes. A working example if possible.
If that is not possible to achieve using Autohotkey, I always have the trusted timers that works fine too.

[nnnik]

You don't understand the code because you have a slight misconception there.
The code above sends a Message (calls the function you defined using OnMessage) whenever a Message is send to any Window.
What exactly is passed using the 2 parameters of the script.
If you have problems using a ShellHook please post in the Ask for Help forum.

[Vh_]

Depending on your task, you could do ControlGetPos and then loop something that says If Width & heigth greater than X.. do Y.