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Add "Eject" button to main window.

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Since especially Windows puts the eject functionality behind an icon in the
systray which is usually hidden and doesn't complain if a USB drive is
unplugged without ejecting it first ejecting such a device might not be
obvious to everyone. Add a button to the main window allowing to eject the
selected player.

Currently only implemented for Windows.

Change-Id: I785ac1482cda03a1379cf6d0fd0d9a0ff8130092
This commit is contained in:
Dominik Riebeling 2012-09-08 20:34:36 +02:00
parent 4f99dd4264
commit 328ff6d979
7 changed files with 137 additions and 29 deletions
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60
rbutil/rbutilqt/base/utils.cpp
View file

@ -692,3 +692,63 @@ QStringList Utils::findRunningProcess(QStringList names)
qDebug() << "[Utils] Found listed processes running:" << found;
return found;
}
/** Eject device from PC.
* Request the OS to eject the player.
* @param device mountpoint of the device
* @return true on success, fals otherwise.
*/
bool Utils::ejectDevice(QString device)
{
#if defined(Q_OS_WIN32)
/* See http://support.microsoft.com/kb/165721 on the procedure to eject a
* device. */
bool success = false;
int i;
HANDLE hdl;
DWORD bytesReturned;
TCHAR volume[8];
/* CreateFile */
_stprintf(volume, _TEXT("\\\\.\\%c:"), device.toAscii().at(0));
hdl = CreateFile(volume, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, 0, NULL);
if(hdl == INVALID_HANDLE_VALUE)
return false;
/* lock volume to make sure no other application is accessing the volume.
* Try up to 10 times. */
for(i = 0; i < 10; i++) {
if(DeviceIoControl(hdl, FSCTL_LOCK_VOLUME,
NULL, 0, NULL, 0, &bytesReturned, NULL))
break;
/* short break before retry */
Sleep(100);
}
if(i < 10) {
/* successfully locked, now dismount */
if(DeviceIoControl(hdl, FSCTL_DISMOUNT_VOLUME,
NULL, 0, NULL, 0, &bytesReturned, NULL)) {
/* make sure media can be removed. */
PREVENT_MEDIA_REMOVAL pmr;
pmr.PreventMediaRemoval = false;
if(DeviceIoControl(hdl, IOCTL_STORAGE_MEDIA_REMOVAL,
&pmr, sizeof(PREVENT_MEDIA_REMOVAL),
NULL, 0, &bytesReturned, NULL)) {
/* eject the media */
if(DeviceIoControl(hdl, IOCTL_STORAGE_EJECT_MEDIA,
NULL, 0, NULL, 0, &bytesReturned, NULL))
success = true;
}
}
}
/* close handle */
CloseHandle(hdl);
return success;
#endif
return false;
}