Catching Windows Messages - Other Than A Right Mouse Click (OpenInsight Specific) [Revelation On-Line Wiki]

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Catching Windows Messages - Other Than A Right Mouse Click (OpenInsight Specific)

At 02 SEP 1998 01:33:21AM Greg James, ISIS, Inc. wrote:

OpenInsight Specific

A past issue of the S/ENL describes how SEND_MESSAGE (using the QUALIFY_EVENT) and WINMSG (of the control of interest) can be used to catch windows messages. Specifically, a right mouse click (aka 0x7b) is discussed.

Are TABs and ESCAPEs also considered windows messages? How could a TAB or ESCAPE be caught in order to execute a 'control specific' script in the WINMSG event of a control?

Thanks.

At 02 SEP 1998 09:44AM Carl Pates wrote:

Greg,

You can use the same method (QUALIFY_EVENT) but you'll probably need to catch the WM_KEYDOWN message and check to see which key has been pressed.

eg.

In the CREATE event…

Equ WM_KEYDOWN$ To 256

RetVal=Send_Message( CtrlName, "QUALIFY_EVENT", WM_KEYDOWN$, TRUE$ )

Then in the WINMSG event…

Begin Case
 Case Message=WM_KEYDOWN$
      Begin Case
         Case wParam=9            ; * // VK_TAB
** Some processing
         Case wParam=27           ; * // VK_ESCAPE
      End Case
End Case

etc etc…

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