Event (Message Data From Screenevent)

#include once "fbgfx.bi"
using fb
Dim variable As Event

Here we report the EVENT structure for clarity:

Type EVENT Field = 1
    Type As Long
    Union
        Type
            scancode As Long
            ascii As Long
        End Type
        Type
            x As Long
            y As Long
            dx As Long
            dy As Long
        End Type
        button As Long
        z As Long
        w As Long
    End Union
End Type

The Type field will contain the event type ID, while the remaining 4 integers will hold sensitive data to the event type.

Event types

• EVENT_KEY_PRESS (1) A key was pressed on the keyboard. The .scancode field contains the platform independent scancode value for the key; if the key has an ascii representation, it is held into the .ascii field, which otherwise has a value of 0.
  
• EVENT_KEY_RELEASE (2) A key was released on the keyboard. The .scancode and .ascii fields have the same meaning as with the EVENT_KEY_PRESS event.
  
• EVENT_KEY_REPEAT (3) A key is being held down repeatedly. The .scancode and .ascii fields have the same meaning as with the EVENT_KEY_PRESS event.
  
• EVENT_MOUSE_MOVE (4) The mouse was moved while it was on the program window. The .x and .y fields contain the new mouse position relative to the upper-left corner of the screen, while the .dx and .dy fields contain the motion deltas.
  
• EVENT_MOUSE_BUTTON_PRESS (5) One of the mouse buttons was pressed. The .button field has one bit set identifying the button that was pressed; bit 0 identifies the left mouse button, bit 1 the right mouse button and bit 2 the middle mouse button.
  
• EVENT_MOUSE_BUTTON_RELEASE (6) One of the mouse buttons was released. The .button field has the same meaning as with the EVENT_MOUSE_BUTTON_PRESS event.
  
• EVENT_MOUSE_DOUBLE_CLICK (7) One of the mouse buttons was double clicked. The .button field has the same meaning as with the EVENT_MOUSE_BUTTON_PRESS event.
  
• EVENT_MOUSE_WHEEL (8) The mouse wheel was used; the new wheel position is returned into the .z field.
  
• EVENT_MOUSE_ENTER (9) The mouse was moved into the program window.
  
• EVENT_MOUSE_EXIT (10) The mouse was moved out of the program window.
  
• EVENT_WINDOW_GOT_FOCUS (11) The program window has got focus.
  
• EVENT_WINDOW_LOST_FOCUS (12) The program window has lost focus.
  
• EVENT_WINDOW_CLOSE (13) The user attempted to close the program window.
  
• EVENT_MOUSE_HWHEEL (14) The horizontal mouse wheel was used; the new horizontal wheel position is returned into the .w field.
  
  

The fbgfx.bi header file contains a definition of the EVENT user data type, so it is not necessary to declare it manually.

• In lang fb, the structure and constants are stored in the FB Namespace. This is not the case in other dialects.
  
  

• New to FreeBASIC
  
  

• ScreenEvent