al_apply_window_constraints - Man Page

#include <allegro5/allegro.h>

void al_apply_window_constraints(ALLEGRO_DISPLAY *display, bool onoff)

Enable or disable previously set constraints by al_set_window_constraints(3) function.

If enabled, the specified display will be automatically resized to new sizes to conform constraints in next cases:

• The specified display is resizable, not maximized and is not in fullscreen mode.
• If the appropriate current display size (width or height) is less than the value of constraint. Applied to minimum constraints.
• If the appropriate current display size (width or height) is greater than the value of constraint. Applied to maximum constraints.

Constrains are not applied when a display is toggle from windowed to maximized or fullscreen modes. When a display is toggle from maximized/fullscreen to windowed mode, then the display may be resized as described above. The later case is also possible when a user drags the maximized display via mouse.

If disabled, the specified display will stop using constraints.

al_get_window_constraints(3), al_set_window_constraints(3)

al_set_window_constraints(3).