%mm_mcinotify

[Steve Bouffe]

Hi,

Been looking around the forum but cant find the answer.

Can I include a value in the call of

MCISENDSTRING( "play mp3 notify", "", 0, hDlg )

So if I'm playing 2 mp3 files and can tell which one has finished

CASE %MM_MCINOTIFY

IF CBWPARAM = %MCI_NOTIFY_SUCCESSFUL THEN

?????

END IF

[Michael Mattias]

>MCISENDSTRING( "play mp3 notify", "", 0, hDlg )



Perhaps you could create a separate callback window (not visible, or a message-only window) for each separate string and use the callback param of the MciSendString() function....

hwndCallback
Handle to a callback window if the "notify" flag was specified in the command string.

... and when you get called back that playing completed you'll know which string has completed....

???

MCM

[Steve Bouffe]

Thaks for the suggestion.

I added the following

FUNCTION MCI_Notify_Dialog_Init AS LONG

LOCAL hDlg AS LONG

DIALOG NEW 0, "", - 100, - 100, 1, 1 , TO MCI_NotifyDlgHan_GL

DIALOG SHOW MODELESS MCI_NotifyDlgHan_GL, CALL MCI_Notify_Proc

END FUNCTION

CALLBACK FUNCTION MCI_Notify_Proc AS LONG

SELECT CASE AS LONG CBMSG

CASE %MM_MCINOTIFY

IF CBWPARAM = %MCI_NOTIFY_SUCCESSFUL THEN

POSTMESSAGE EposDlgHan_GL, %WM_USER + 102, 0, 0

END IF

END SELECT

END FUNCTION

This works fine but whats a "message-only window" ?

[Stuart McLachlan]

Originally Posted by Steve Bouffe

This works fine but whats a "message-only window" ?

A window which is only used to process callback messages and which the user doesn't see or interact with in any way ( Hence your negative screen co-ordinates and 1 pixel size).

[Michael Mattias]

A message-only window is created by specifying certain values in the hWndParent param of your call to CreateWindowEx:

hWndParent
[in] Handle to the parent or owner window of the window being created. To create a child window or an owned window, supply a valid window handle. This parameter is optional for pop-up windows.
Windows 2000/XP: To create a message-only window, supply HWND_MESSAGE or a handle to an existing message-only window.

MCM

[Stuart McLachlan]

To amplify MCMs comment:

Message-Only Windows

A message-only window enables you to send and receive messages. It is not visible, has no z-order, cannot be enumerated, and does not receive broadcast messages. The window simply dispatches messages.
To create a message-only window, specify the HWND_MESSAGE constant or a handle to an existing message-only window in the hWndParent parameter of the CreateWindowEx function. You can also change an existing window to a message-only window by specifying HWND_MESSAGE in the hWndNewParent parameter of the SetParent function.
To find message-only windows, specify HWND_MESSAGE in the hwndParent parameter of the FindWindowEx function. In addition, FindWindowEx searches message-only windows as well as top-level windows if both the hwndParent and hwndChildAfter parameters are NULL.

It appears to work the same with DDT created dialogs if you use the constant %HWND_MESSAGE.