Initial community commit

Src/external_dependencies/openmpt-trunk/mptrack/IPCWindow.h

@@ -0,0 +1,55 @@
+/*
+* IPCWindow.h
+* -----------
+* Purpose: Hidden window to receive file open commands from another OpenMPT instance
+* Notes  : (currently none)
+* Authors: OpenMPT Devs
+* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
+*/
+
+#pragma once
+
+#include "openmpt/all/BuildSettings.hpp"
+
+OPENMPT_NAMESPACE_BEGIN
+
+namespace IPCWindow
+{
+
+	enum class Function : ULONG
+	{
+		Open                               = 0x01,
+		SetWindowForeground                = 0x02,
+		GetVersion                         = 0x03,  // returns Version::GewRawVersion()
+		GetArchitecture                    = 0x04,  // returns mpt::OS::Windows::Architecture
+		HasSameBinaryPath                  = 0x05,
+		HasSameSettingsPath                = 0x06
+	};
+
+	void Open(HINSTANCE hInstance);
+
+	void Close();
+
+	LRESULT SendIPC(HWND ipcWnd, Function function, mpt::const_byte_span data = mpt::const_byte_span());
+
+	template <typename Tdata> LRESULT SendIPC(HWND ipcWnd, Function function, mpt::span<const Tdata> data) { return SendIPC(ipcWnd, function, mpt::const_byte_span(reinterpret_cast<const std::byte*>(data.data()), data.size() * sizeof(Tdata))); }
+
+	enum InstanceRequirements
+	{
+		SamePath         = 0x01u,
+		SameSettings     = 0x02u,
+		SameArchitecture = 0x04u,
+		SameVersion      = 0x08u
+	};
+	MPT_DECLARE_ENUM(InstanceRequirements)
+
+	HWND FindIPCWindow();
+
+	HWND FindIPCWindow(FlagSet<InstanceRequirements> require);
+
+	// Send file open requests to other OpenMPT instance, if there is one
+	bool SendToIPC(const std::vector<mpt::PathString> &filenames);
+
+}
+
+OPENMPT_NAMESPACE_END