Creating a Status Callback Function - Win32 Multimedia Programmer's Reference (mmedia.hlp)

Creating a Status Callback Function

The following example is a simple status callback function. Register this callback by using the capSetCallbackOnStatus macro.

// StatusCallbackProc: status callback function

// hWnd: capture window handle

// nID: status code for the current status

// lpStatusText: status text string for the current status

LRESULT PASCAL StatusCallbackProc(HWND hWnd, int nID,

LPSTR lpStatusText)

{

if (!ghWndMain)

return FALSE;

if (nID == 0) { // Clear old status messages.

SetWindowText(ghWndMain, (LPSTR) gachAppName);

return (LRESULT) TRUE;

}

// Show the status ID and status text...

wsprintf(gachBuffer, "Status# %d: %s", nID, lpStatusText);

SetWindowText(ghWndMain, (LPSTR)gachBuffer);

return (LRESULT) TRUE;

}

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