mirror of https://github.com/dcoredump/dexed.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
137 lines
4.4 KiB
137 lines
4.4 KiB
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2013 - Raw Material Software Ltd.
|
|
|
|
Permission is granted to use this software under the terms of either:
|
|
a) the GPL v2 (or any later version)
|
|
b) the Affero GPL v3
|
|
|
|
Details of these licenses can be found at: www.gnu.org/licenses
|
|
|
|
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
|
|
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
|
|
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
|
|
|
|
------------------------------------------------------------------------------
|
|
|
|
To release a closed-source product which uses JUCE, commercial licenses are
|
|
available: visit www.juce.com for more information.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
#ifndef JUCE_WIN32_HIDDENMESSAGEWINDOW_H_INCLUDED
|
|
#define JUCE_WIN32_HIDDENMESSAGEWINDOW_H_INCLUDED
|
|
|
|
//==============================================================================
|
|
class HiddenMessageWindow
|
|
{
|
|
public:
|
|
HiddenMessageWindow (const TCHAR* const messageWindowName, WNDPROC wndProc)
|
|
{
|
|
String className ("JUCE_");
|
|
className << String::toHexString (Time::getHighResolutionTicks());
|
|
|
|
HMODULE moduleHandle = (HMODULE) Process::getCurrentModuleInstanceHandle();
|
|
|
|
WNDCLASSEX wc = { 0 };
|
|
wc.cbSize = sizeof (wc);
|
|
wc.lpfnWndProc = wndProc;
|
|
wc.cbWndExtra = 4;
|
|
wc.hInstance = moduleHandle;
|
|
wc.lpszClassName = className.toWideCharPointer();
|
|
|
|
atom = RegisterClassEx (&wc);
|
|
jassert (atom != 0);
|
|
|
|
hwnd = CreateWindow (getClassNameFromAtom(), messageWindowName,
|
|
0, 0, 0, 0, 0, 0, 0, moduleHandle, 0);
|
|
jassert (hwnd != 0);
|
|
}
|
|
|
|
~HiddenMessageWindow()
|
|
{
|
|
DestroyWindow (hwnd);
|
|
UnregisterClass (getClassNameFromAtom(), 0);
|
|
}
|
|
|
|
inline HWND getHWND() const noexcept { return hwnd; }
|
|
|
|
private:
|
|
ATOM atom;
|
|
HWND hwnd;
|
|
|
|
LPCTSTR getClassNameFromAtom() noexcept { return (LPCTSTR) MAKELONG (atom, 0); }
|
|
};
|
|
|
|
//==============================================================================
|
|
class JuceWindowIdentifier
|
|
{
|
|
public:
|
|
static bool isJUCEWindow (HWND hwnd) noexcept
|
|
{
|
|
return GetWindowLongPtr (hwnd, GWLP_USERDATA) == getImprobableWindowNumber();
|
|
}
|
|
|
|
static void setAsJUCEWindow (HWND hwnd, bool isJuceWindow) noexcept
|
|
{
|
|
SetWindowLongPtr (hwnd, GWLP_USERDATA, isJuceWindow ? getImprobableWindowNumber() : 0);
|
|
}
|
|
|
|
private:
|
|
static LONG_PTR getImprobableWindowNumber() noexcept
|
|
{
|
|
static LONG_PTR number = (LONG_PTR) Random::getSystemRandom().nextInt64();
|
|
return number;
|
|
}
|
|
};
|
|
|
|
//==============================================================================
|
|
class DeviceChangeDetector : private Timer
|
|
{
|
|
public:
|
|
DeviceChangeDetector (const wchar_t* const name)
|
|
: messageWindow (name, (WNDPROC) deviceChangeEventCallback)
|
|
{
|
|
SetWindowLongPtr (messageWindow.getHWND(), GWLP_USERDATA, (LONG_PTR) this);
|
|
}
|
|
|
|
virtual ~DeviceChangeDetector() {}
|
|
|
|
virtual void systemDeviceChanged() = 0;
|
|
|
|
void triggerAsyncDeviceChangeCallback()
|
|
{
|
|
// We'll pause before sending a message, because on device removal, the OS hasn't always updated
|
|
// its device lists correctly at this point. This also helps avoid repeated callbacks.
|
|
startTimer (500);
|
|
}
|
|
|
|
private:
|
|
HiddenMessageWindow messageWindow;
|
|
|
|
static LRESULT CALLBACK deviceChangeEventCallback (HWND h, const UINT message,
|
|
const WPARAM wParam, const LPARAM lParam)
|
|
{
|
|
if (message == WM_DEVICECHANGE
|
|
&& (wParam == 0x8000 /*DBT_DEVICEARRIVAL*/
|
|
|| wParam == 0x8004 /*DBT_DEVICEREMOVECOMPLETE*/
|
|
|| wParam == 0x0007 /*DBT_DEVNODES_CHANGED*/))
|
|
{
|
|
((DeviceChangeDetector*) GetWindowLongPtr (h, GWLP_USERDATA))
|
|
->triggerAsyncDeviceChangeCallback();
|
|
}
|
|
|
|
return DefWindowProc (h, message, wParam, lParam);
|
|
}
|
|
|
|
void timerCallback() override
|
|
{
|
|
stopTimer();
|
|
systemDeviceChanged();
|
|
}
|
|
};
|
|
|
|
#endif // JUCE_WIN32_HIDDENMESSAGEWINDOW_H_INCLUDED
|
|
|