SENDMSG() Function - Send Message to Windows and Controls
Syntax
SENDMSG(sysgui,id,function,int,string${,context{,ERR=lineref}})
Description
While the SENDMSG() functions contained in this section apply to windows and child windows, there are SENDMSG()functions that apply specifically to grid , INPUTE, INPUTN, and tab controls, as well as those that apply specifically to setting international keyboards. The following identifies the parameters common to all SENDMSG() functions:
|
Parameter |
Description |
|---|---|
|
sysgui |
Valid SYSGUI channel. |
|
id |
Object ID. For system operations, use a value of -1. Use a value of 0 when referring to the window in the current context. When the context parameter is included, using a value of 0 refers to the window of the specified context. |
|
function |
Function number. |
|
int |
Four-byte integer containing an argument for a given function. |
|
string$ |
String argument for a given function. |
|
context |
Context that contains the specified ID. This parameter is only necessary for objects that do not pertain to the current context. |
|
ERR=lineref |
Branch to be taken if an error occurs during execution. |
If any parameters are invalid because they specify an id or context that does not exist or are invalid for the request, Visual PRO/5 generates an !ERROR=17 and sets the TCB(10) value to the 1-based index of the invalid parameter.
See Also
GRID SENDMSG() Functions Listed in Alphabetical Order
GRID SENDMSG() Functions Listed in Numeric Order