Function:centerWindow

[laserlaser]

function centerWindow(center_window) 
    local screenW,screenH=guiGetScreenSize() 
    local windowW,windowH=guiGetSize(center_window,false) 
    local x,y = (screenW-windowW)/2,(screenH-windowH)/2 
    guiSetPosition(center_window,x,y,false) 
end 
  

Example

  
local wnd = guiCreateWindow(...) 
centerWindow(wnd) 
  

[will briggs]

May i ask what you need? Do you need help our is this an example...

[Callum]

You could make it;

function centerWindow(window) 
    local resX,resY = guiGetScreenSize() 
    local w,h = guiGetSize(window,false) 
    guiSetPosition(window,(resX/2)-(w/2),(resY/2)-(h/2),false) 
end 

[karlis]

it would be most effective and recommended to put guiGetScreenSize() at front of any clientside script with dx/gui functions, so you don't have to call twice.

[laserlaser]

It works, do you want to see?

I want, and screen shots;

Before

After

@karlis I can not understand you because my english is little english =)

[Antibird]

2 lines are needed

guiSetProperty( gui-window, "HorizontalAlignment", "Centre") 
guiSetProperty( gui-window, "VerticalAlignment", "Centre") 

[laserlaser]

2 lines are needed

guiSetProperty( gui-window, "HorizontalAlignment", "Centre") 
guiSetProperty( gui-window, "VerticalAlignment", "Centre") 

I think, shut up.

[Castillo]

laserlaser, please respect the forum rules and don't use bad language, edit your post.

[Antibird]

I think...

I doubt u do. Forgiven anyway.

[SugarD-x]

Stop flaming unless you want the topic locked and you all to receive forum warnings...or worse.