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DNN Vision Library |

Macros | Typedefs | Enumerations | Functions

glEvents.h File Reference

Go to the source code of this file.

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Macros

| | #define | KEY_PRESSED 1 | | | Define for KEY_STATE and KEY_RAW events when key is pressed. More...
| | | | #define | KEY_RELEASED 0 | | | Define for KEY_STATE and KEY_RAW events when key is released. More...
| | | | #define | KEY_OFFSET 0xff00 | | | | #define | MOUSE_PRESSED 1 | | | Define for MOUSE_BUTTON event when button is pressed. More...
| | | | #define | MOUSE_RELEASED 0 | | | Define for MOUSE_BUTTON event when button is released. More...
| | | | #define | MOUSE_LEFT 1 | | | Define for the left mouse button number. More...
| | | | #define | MOUSE_MIDDLE 2 | | | Define for the middle mouse button (or scroll wheel button) More...
| | | | #define | MOUSE_RIGHT 3 | | | Define for the right mouse button number. More...
| | | | #define | MOUSE_WHEEL_UP 4 | | | Define for the mouse wheel scroll up button number. More...
| | | | #define | MOUSE_WHEEL_DOWN 5 | | | Define for the mouse wheel scroll down button number. More...
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Typedefs

| | typedef bool(* | glEventHandler) (uint16_t event, int a, int b, void *user) | | | Event message handler callback for recieving UI messages from a window. More...
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Enumerations

| | enum | glEventType {
MOUSE_MOVE = 0, MOUSE_ABSOLUTE, MOUSE_BUTTON, MOUSE_DRAG,
MOUSE_WHEEL, KEY_STATE, KEY_MODIFIED, KEY_CHAR,
WIDGET_CREATED, WIDGET_SELECTED, WIDGET_MOVED, WIDGET_RESIZED,
WINDOW_RESIZED, WINDOW_CLOSED
} | | | User interface event message types. More...
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Functions

| | void | glRegisterEvents (glEventHandler callback, void *user=NULL, uint32_t display=0) | | | Register an event message handler that will be called with events. More...
| | | | void | glUnregisterEvents (glEventHandler callback, void *user=NULL) | | | Unregister an event message handler from being called with events. More...
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Macro Definition Documentation

◆KEY_OFFSET

| #define KEY_OFFSET 0xff00 |

Function Documentation

◆glRegisterEvents()

| void glRegisterEvents | ( | glEventHandler | callback, | | | | void * | user = NULL, | | | | uint32_t | display = 0 | | | ) | | |

Register an event message handler that will be called with events.

Parameters

| callback | function pointer to the event message handler callback | | user | optional user-specified pointer that will be passed to all invocations of this event handler (typically an object) | | display | optional display ID of the glDisplay instance to use |

◆glUnregisterEvents()

| void glUnregisterEvents | ( | glEventHandler | callback, | | | | void * | user = NULL | | | ) | | |

Unregister an event message handler from being called with events.

UnregisterEventHandler() will search for previously registered event handlers that have the same function pointer and/or user pointer, and remove them for being called again in the future.