_GUICtrlSlider_SetPos Problem

[Zohar]

Hi

I am trying to write a small script, that will change the current Screen Resolution.

I am using Windows XP SP3.

I used _GUICtrlSlider_SetPos(),

and it indeed moves the Slider,

however, it seems tht the event that should happen after moving the slider, doesn't happen.

Here's my small script:

#include <GuiSlider.au3>


Run("Rundll32.exe shell32.dll,Control_RunDLL desk.cpl ,3") ;ControlPanelDisplay, Settings Tab
WinWaitActive("Display Properties")
    Local $hSlider=ControlGetHandle("","","msctls_trackbar321")
    _GUICtrlSlider_SetPos($hSlider,8) ;1280x1024
    Sleep(2000)
Send("{Enter}")

If you run it, you can see, that the SLider indeed moves,

but the underlying value of it, doesn't change.

(You can know if the value actually changes, if the "XXXX by XXXX pixels" message changes too, according to the slider position)

Anyone can tell me how to make it work?

Thank you

Edited May 7, 2012 by Zohar

[stormbreaker]

Replace ControlGetHandle line in your script with ControlGetHandle("","","[Class:msctls_trackbar32]")

[Zohar]

Hi MKISH

Tried what you offered,

and no change happened.

The slider still moves,

but the "XXXX by XXXX pixels" line below did not change after it moved,

and pressing Enter did not change the resolution.

For some reason, the _GUICtrlSlider_SetPos() function only affects the Slider Visually, but not its Value.

Why can that happen?

[stormbreaker]

Just add ControlClick("Display Properties", "", $hSlider, "Primary") at the end of your script

Run("Rundll32.exe shell32.dll,Control_RunDLL desk.cpl ,3") ;ControlPanelDisplay, Settings Tab
WinWaitActive("Display Properties")
    Local $hSlider=ControlGetHandle("","","msctls_trackbar321")
    _GUICtrlSlider_SetPos($hSlider,8) ;1280x1024
ControlClick("Display Properties", "", $hSlider, "Primary")
Send("{Enter}")

[Zohar]

Hi MKISH

Your workaround is very nice, because that's what I had to manually do every time -

I had to click with the mouse, on the moving part of the Slider.

(without moving it..

_GUICtrlSlider_SetPos() moved it to the location I needed, and then I had to manually click with the mouse(myself), to activate the change in the slider's value)

It indeed works good with the mouse,

but unfortunately, it doesn't work good with this line of code:

ControlClick("Display Properties", "", $hSlider, "Primary")

The reason it doesn't work good, is:

When you use CotnrolClick() on a Control,

the Middle Location of that control is clicked.

In a Slider, it means a point, which is not necessarily where the moving part of the slider is...

So while this line of code does make a change in the slider's Value,

It also moves the slider abit...

I wonder,

Does anyone know why _GUICtrlSlider_SetPos() doesn't activate the "Positionchanged" event of the Slider after it moves it?

That seems to be the missing part here...

Edited May 9, 2012 by Zohar

[BrewManNH]

Why are you using the control panel to change the display? Do a search in the Example Scripts section for the Desktop Resolution Changer script.