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#pragma once
#include <system_error>
#define NOMINMAX
#include <Windows.h>
#include "rawaccel.hpp"
#define RA_READ CTL_CODE(0x8888, 0x888, METHOD_OUT_DIRECT, FILE_ANY_ACCESS)
#define RA_WRITE CTL_CODE(0x8888, 0x889, METHOD_BUFFERED, FILE_ANY_ACCESS)
#pragma warning(push)
#pragma warning(disable:4245) // int -> DWORD conversion while passing CTL_CODE
namespace rawaccel {
mouse_modifier read() {
HANDLE ra_handle = INVALID_HANDLE_VALUE;
ra_handle = CreateFileW(L"\\\\.\\rawaccel", 0, 0, 0, OPEN_EXISTING, 0, 0);
if (ra_handle == INVALID_HANDLE_VALUE) {
throw install_error();
}
mouse_modifier mod;
DWORD dummy;
BOOL success = DeviceIoControl(
ra_handle,
RA_READ,
NULL, // input buffer
0, // input buffer size
&mod, // output buffer
sizeof(mouse_modifier), // output buffer size
&dummy, // bytes returned
NULL // overlapped structure
);
CloseHandle(ra_handle);
if (!success) {
throw std::system_error(GetLastError(), std::system_category(), "DeviceIoControl failed");
}
return mod;
}
void write(mouse_modifier mod) {
HANDLE ra_handle = INVALID_HANDLE_VALUE;
ra_handle = CreateFileW(L"\\\\.\\rawaccel", 0, 0, 0, OPEN_EXISTING, 0, 0);
if (ra_handle == INVALID_HANDLE_VALUE) {
throw install_error();
}
DWORD dummy;
BOOL success = DeviceIoControl(
ra_handle,
RA_WRITE,
&mod, // input buffer
sizeof(mouse_modifier), // input buffer size
NULL, // output buffer
0, // output buffer size
&dummy, // bytes returned
NULL // overlapped structure
);
CloseHandle(ra_handle);
if (!success) {
if (auto err = GetLastError(); err != ERROR_BUSY) {
throw std::system_error(err, std::system_category(), "DeviceIoControl failed");
}
throw cooldown_error();
}
}
}
#pragma warning(pop)
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