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Creating a Status Callback Function

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

TCHAR gachAppName[] = TEXT("Application Name");  // Application name.
TCHAR gachBuffer[100];  // Global buffer.

// 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, 
    LPTSTR lpStatusText) 
    if (!hWnd) 
        return FALSE; 
    if (nID == 0) {
        // Clear old status messages.
        SetWindowText(hWnd, gachAppName); 
        return (LRESULT) TRUE; 
    // Show the status ID and status text. 
    _stprintf_s(gachBuffer, TEXT("Status# %d: %s"), nID, lpStatusText); 
    SetWindowText(hWnd, gachBuffer); 
    return (LRESULT) TRUE; 

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