a shower door assembly with linkage control comprising a stationary frame , a movable frame and an adjustment assembly disposed between the stationary frame and the movable frame . the adjustment assembly comprises at least two adjustment devices and locking devices for locking each of the adjustment devices . each of the locking devices comprises a locking element and a guiding device along which the locking element can slide . an actuating arm is provided to release and lock adjustment devices all at once . therefore , it is unnecessary to adjust each of the adjustment devices separately , facilitating the operation of adjustment .