* Assuming you named container myContainer and checkbox in it myChkBox * Container.init with This.myChkBox .left = int((this.parent.width - .width) / 2) && Center hor. .top = int((this.parent.parent.rowheight - .height)/2) && center vert. .controlsource = this.parent.controlsource && Setcontrolsource endwith *Gotfocus of container this.myChkBox.setfocus() * Would provide as if it was directly there w/o a container * Belonging columns resize event with This.myContainer.myChkBox .left = int((this.width - .width) / 2) && Center hor. .top = int((this.parent.rowheight - .height)/2) && center vert. endwithPS: Set container backstyle and checkbox backstyle to transparent. So your column colorings (ie:DynamicBackColor) would work as intended.