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Win32 specific: Using SHChangeNotifyRegister to get notifications

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on removable media insert / eject events.
From now on we no more poll for removable media on Windows.

Thanks @mjgtp from prusaprinters.org
See the following discussion:
https://forum.prusaprinters.org/forum/prusaslicer/prusaslicer-trying-to-access-my-floppy-disk-a

The final working code sample was taken from Chromium source code,
volume_mount_watcher_win.cc
This commit is contained in:
bubnikv 2020-03-27 08:10:00 +01:00
parent 3fdd643f49
commit 58192ba6c2
4 changed files with 73 additions and 11 deletions
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37
src/slic3r/GUI/GUI_App.cpp
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@ -50,8 +50,8 @@
#include "RemovableDriveManager.hpp"
#ifdef __WXMSW__
#include <Shlobj.h>
#include <dbt.h>
#include <shlobj.h>
#endif // __WXMSW__
#if ENABLE_THUMBNAIL_GENERATOR_DEBUG
@ -158,6 +158,41 @@ static void register_win32_device_notification_event()
}
return true;
});
wxWindow::MSWRegisterMessageHandler(MainFrame::WM_USER_MEDIACHANGED, [](wxWindow *win, WXUINT /* nMsg */, WXWPARAM wParam, WXLPARAM lParam) {
// Some messages are sent to top level windows by default, some messages are sent to only registered windows, and we explictely register on MainFrame only.
auto main_frame = dynamic_cast<MainFrame*>(win);
auto plater = (main_frame == nullptr) ? nullptr : main_frame->plater();
if (plater == nullptr)
// Maybe some other top level window like a dialog or maybe a pop-up menu?
return true;
wchar_t sPath[MAX_PATH];
if (lParam == SHCNE_MEDIAINSERTED || lParam == SHCNE_MEDIAREMOVED) {
struct _ITEMIDLIST* pidl = *reinterpret_cast<struct _ITEMIDLIST**>(wParam);
if (! SHGetPathFromIDList(pidl, sPath)) {
BOOST_LOG_TRIVIAL(error) << "MediaInserted: SHGetPathFromIDList failed";
return false;
}
}
switch (lParam) {
case SHCNE_MEDIAINSERTED:
{
//printf("SHCNE_MEDIAINSERTED %S\n", sPath);
plater->GetEventHandler()->AddPendingEvent(VolumeAttachedEvent(EVT_VOLUME_ATTACHED));
break;
}
case SHCNE_MEDIAREMOVED:
{
//printf("SHCNE_MEDIAREMOVED %S\n", sPath);
plater->GetEventHandler()->AddPendingEvent(VolumeDetachedEvent(EVT_VOLUME_DETACHED));
break;
}
default:
// printf("Unknown\n");
break;
}
return true;
});
}
#endif // WIN32