[Qt-interest] winEvent

[OS Prog]

Hi,

I try to find the attached USB PID and VID.

bool MainWindow::winEvent ( MSG * message, long * result )

{

PDEV_BROADCAST_DEVICEINTERFACE pdbd;

if (WM_DEVICECHANGE == message->message)

{

switch(message->wParam)

{

case DBT_DEVICEARRIVAL:

qDebug("DBT_DEVICEARRIVAL");

qDebug("lParam:%08X", message->lParam);

if(message->lParam)

{

pdbd = (PDEV_BROADCAST_DEVICEINTERFACE)message->lParam;

qDebug("%s", qPrintable(QString::fromUtf16((ushort*)(pdbd->dbcc_name))));

}

break;

<snip>


When I attach an USB Flash drive, I get only '?"' for dbcc_name. I expect
some string with PID and VID inside.


What I'm doing wrong?


It's Qt4.5 on Vista.


Regards,

Nikolay
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