Event Message Data From Screenevent

Home › Screen Functions › Event (Message Data From Screenevent)

Event (Message Data From Screenevent)

Holds one event fetched by ScreenEvent: its type and its key or mouse data.

Syntax

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

Description

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

The event type is identified by an ID number returned into the first integer of the event buffer (the .type field in the EVENT structure). Known event type IDs - and their values at time of writing - are:

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

Remarks

Dialect Differences

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

Differences from QB

• New to FreeBASIC

See also

• ScreenEvent
• Keyboard scancodes

Examples

See example at ScreenEvent.

---

Category: Screen Functions
Kind: keyword

---

Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.