Cannot hide an MDI Child Form)Cannot change Visible in OnShow or OnHide"Cannot make a visible window modalMenu index out of rangeMenu inserted twiceSub-menu is not in menuNot enough timers available@GroupIndex cannot be less than a previous menu item's GroupIndex5Cannot create form. No MDI forms are currently active0Can only modify an image if it contains a bitmap*A control cannot have itself as its parentOKCancel&Yes&No&Help