POST EVENT
POST EVENT ( what ; message ; when ; mouseX ; mouseY ; modifiers {; process} )
| Parameter | Type | Description | |
|---|---|---|---|
| what | Integer | → | Type of event |
| message | Integer | → | Event message |
| when | Integer | → | Event time expressed in ticks |
| mouseX | Integer | → | Horizontal coordinate of mouse |
| mouseY | Integer | → | Vertical coordinate of mouse |
| modifiers | Integer | → | Modifier keys state |
| process | Integer | → | Destination process reference number, or Application event queue, if omitted, or 0 |
This command is not thread-safe, it cannot be used in preemptive code.
Description
The POST EVENT command simulates a keyboard or mouse event. Its effect is as if the user actually acted on the keyboard or the mouse.
You pass one of the following values in what:
| Constant | Type | Value |
|---|---|---|
| Auto key event | Longint | 5 |
| Key down event | Longint | 3 |
| Key up event | Longint | 4 |
| Mouse down event | Longint | 1 |
| Mouse up event | Longint | 2 |
If the event is a mouse-related event, you pass 0 (zero) in message. If the event is a keyboard-related event, you pass the code of the simulated character in message.
Usually, you pass the value returned by Tickcount in when.
If the event is a mouse-related event, you pass the horizontal and vertical coordinates of the click in mouseX and mouseY.
In the parameter modifiers, you pass one or a combination of the constants of the Events (Modifiers) theme.
| Constant | Type | Value | Comment |
|---|---|---|---|
| Activate window bit | Longint | 0 | |
| Activate window mask | Longint | 1 | |
| Caps lock key bit | Longint | 10 | Windows and OS X |
| Caps lock key mask | Longint | 1024 | Windows and OS X |
| Command key bit | Longint | 8 | Ctrl key under Windows, Command key under OS X |
| Command key mask | Longint | 256 | Ctrl key under Windows, Command key under OS X |
| Control key bit | Longint | 12 | Ctrl key under OS X, or right click under Windows and OS X |
| Control key mask | Longint | 4096 | Ctrl key under OS X, or right click under Windows and OS X |
| Mouse button bit | Longint | 7 | |
| Mouse button mask | Longint | 128 | |
| Option key bit | Longint | 11 | Alt key (also called Option under OS X) |
| Option key mask | Longint | 2048 | Alt key (also called Option under OS X) |
| Right control key bit | Longint | 15 | |
| Right control key mask | Longint | 32768 | |
| Right option key bit | Longint | 14 | |
| Right option key mask | Longint | 16384 | |
| Right shift key bit | Longint | 13 | |
| Right shift key mask | Longint | 8192 | |
| Shift key bit | Longint | 9 | Windows and OS X |
| Shift key mask | Longint | 512 | Windows and OS X |
For example, to simulate the Shift key, pass Shift key bit.
If you specify the process parameter, the event is sent to the process whose process number you pass in process. If you pass 0 (zero) or if you omit the parameter, the event is sent at the application level, and the 4D scheduler will dispatch it to the appropriate process.