libraries/ManiaLib/Gui/Component.php
function setSizeX($sizeX)
    {
        $oldX = $this->sizeX;
        $this->sizeX = $sizeX;
        $this->onResize($oldX, $this->sizeY);
    }
function setSizeX($sizeX)
    {
        $oldX = $this->sizeX;
        $this->sizeX = $sizeX;
        $this->onResize($oldX, $this->sizeY);
    }
Sets the width of the element
@param float