diff --git a/dist/hidapi.dll b/dist/hidapi.dll new file mode 100644 index 0000000..192a5bf Binary files /dev/null and b/dist/hidapi.dll differ diff --git a/dist/setFnKeys.exe b/dist/setFnKeys.exe new file mode 100644 index 0000000..8b20144 Binary files /dev/null and b/dist/setFnKeys.exe differ diff --git a/dist/setMediaKeys.exe b/dist/setMediaKeys.exe new file mode 100644 index 0000000..8a805ed Binary files /dev/null and b/dist/setMediaKeys.exe differ diff --git a/hidapi/include/hidapi.h b/hidapi/include/hidapi.h new file mode 100644 index 0000000..22b3cd6 --- /dev/null +++ b/hidapi/include/hidapi.h @@ -0,0 +1,603 @@ +/******************************************************* + HIDAPI - Multi-Platform library for + communication with HID devices. + + Alan Ott + Signal 11 Software + + libusb/hidapi Team + + Copyright 2022, All Rights Reserved. + + At the discretion of the user of this library, + this software may be licensed under the terms of the + GNU General Public License v3, a BSD-Style license, or the + original HIDAPI license as outlined in the LICENSE.txt, + LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt + files located at the root of the source distribution. + These files may also be found in the public source + code repository located at: + https://github.com/libusb/hidapi . +********************************************************/ + +/** @file + * @defgroup API hidapi API + */ + +#ifndef HIDAPI_H__ +#define HIDAPI_H__ + +#include + +#ifdef _WIN32 + #define HID_API_EXPORT __declspec(dllexport) + #define HID_API_CALL +#else + #define HID_API_EXPORT /**< API export macro */ + #define HID_API_CALL /**< API call macro */ +#endif + +#define HID_API_EXPORT_CALL HID_API_EXPORT HID_API_CALL /**< API export and call macro*/ + +/** @brief Static/compile-time major version of the library. + + @ingroup API +*/ +#define HID_API_VERSION_MAJOR 0 +/** @brief Static/compile-time minor version of the library. + + @ingroup API +*/ +#define HID_API_VERSION_MINOR 13 +/** @brief Static/compile-time patch version of the library. + + @ingroup API +*/ +#define HID_API_VERSION_PATCH 1 + +/* Helper macros */ +#define HID_API_AS_STR_IMPL(x) #x +#define HID_API_AS_STR(x) HID_API_AS_STR_IMPL(x) +#define HID_API_TO_VERSION_STR(v1, v2, v3) HID_API_AS_STR(v1.v2.v3) + +/** @brief Coverts a version as Major/Minor/Patch into a number: + <8 bit major><16 bit minor><8 bit patch>. + + This macro was added in version 0.12.0. + + Convenient function to be used for compile-time checks, like: + #if HID_API_VERSION >= HID_API_MAKE_VERSION(0, 12, 0) + + @ingroup API +*/ +#define HID_API_MAKE_VERSION(mj, mn, p) (((mj) << 24) | ((mn) << 8) | (p)) + +/** @brief Static/compile-time version of the library. + + This macro was added in version 0.12.0. + + @see @ref HID_API_MAKE_VERSION. + + @ingroup API +*/ +#define HID_API_VERSION HID_API_MAKE_VERSION(HID_API_VERSION_MAJOR, HID_API_VERSION_MINOR, HID_API_VERSION_PATCH) + +/** @brief Static/compile-time string version of the library. + + @ingroup API +*/ +#define HID_API_VERSION_STR HID_API_TO_VERSION_STR(HID_API_VERSION_MAJOR, HID_API_VERSION_MINOR, HID_API_VERSION_PATCH) + +/** @brief Maximum expected HID Report descriptor size in bytes. + + Since version 0.13.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 13, 0) + + @ingroup API +*/ +#define HID_API_MAX_REPORT_DESCRIPTOR_SIZE 4096 + +#ifdef __cplusplus +extern "C" { +#endif + struct hid_api_version { + int major; + int minor; + int patch; + }; + + struct hid_device_; + typedef struct hid_device_ hid_device; /**< opaque hidapi structure */ + + /** @brief HID underlying bus types. + + @ingroup API + */ + typedef enum { + /* Unknown bus type */ + HID_API_BUS_UNKNOWN = 0x00, + + /* USB bus + Specifications: + https://usb.org/hid */ + HID_API_BUS_USB = 0x01, + + /* Bluetooth or Bluetooth LE bus + Specifications: + https://www.bluetooth.com/specifications/specs/human-interface-device-profile-1-1-1/ + https://www.bluetooth.com/specifications/specs/hid-service-1-0/ + https://www.bluetooth.com/specifications/specs/hid-over-gatt-profile-1-0/ */ + HID_API_BUS_BLUETOOTH = 0x02, + + /* I2C bus + Specifications: + https://docs.microsoft.com/previous-versions/windows/hardware/design/dn642101(v=vs.85) */ + HID_API_BUS_I2C = 0x03, + + /* SPI bus + Specifications: + https://www.microsoft.com/download/details.aspx?id=103325 */ + HID_API_BUS_SPI = 0x04, + } hid_bus_type; + + /** hidapi info structure */ + struct hid_device_info { + /** Platform-specific device path */ + char *path; + /** Device Vendor ID */ + unsigned short vendor_id; + /** Device Product ID */ + unsigned short product_id; + /** Serial Number */ + wchar_t *serial_number; + /** Device Release Number in binary-coded decimal, + also known as Device Version Number */ + unsigned short release_number; + /** Manufacturer String */ + wchar_t *manufacturer_string; + /** Product string */ + wchar_t *product_string; + /** Usage Page for this Device/Interface + (Windows/Mac/hidraw only) */ + unsigned short usage_page; + /** Usage for this Device/Interface + (Windows/Mac/hidraw only) */ + unsigned short usage; + /** The USB interface which this logical device + represents. + + * Valid on both Linux implementations in all cases. + * Valid on the Windows implementation only if the device + contains more than one interface. + * Valid on the Mac implementation if and only if the device + is a USB HID device. */ + int interface_number; + + /** Pointer to the next device */ + struct hid_device_info *next; + + /** Underlying bus type + Since version 0.13.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 13, 0) + */ + hid_bus_type bus_type; + }; + + + /** @brief Initialize the HIDAPI library. + + This function initializes the HIDAPI library. Calling it is not + strictly necessary, as it will be called automatically by + hid_enumerate() and any of the hid_open_*() functions if it is + needed. This function should be called at the beginning of + execution however, if there is a chance of HIDAPI handles + being opened by different threads simultaneously. + + @ingroup API + + @returns + This function returns 0 on success and -1 on error. + Call hid_error(NULL) to get the failure reason. + */ + int HID_API_EXPORT HID_API_CALL hid_init(void); + + /** @brief Finalize the HIDAPI library. + + This function frees all of the static data associated with + HIDAPI. It should be called at the end of execution to avoid + memory leaks. + + @ingroup API + + @returns + This function returns 0 on success and -1 on error. + */ + int HID_API_EXPORT HID_API_CALL hid_exit(void); + + /** @brief Enumerate the HID Devices. + + This function returns a linked list of all the HID devices + attached to the system which match vendor_id and product_id. + If @p vendor_id is set to 0 then any vendor matches. + If @p product_id is set to 0 then any product matches. + If @p vendor_id and @p product_id are both set to 0, then + all HID devices will be returned. + + @ingroup API + @param vendor_id The Vendor ID (VID) of the types of device + to open. + @param product_id The Product ID (PID) of the types of + device to open. + + @returns + This function returns a pointer to a linked list of type + struct #hid_device_info, containing information about the HID devices + attached to the system, + or NULL in the case of failure or if no HID devices present in the system. + Call hid_error(NULL) to get the failure reason. + + @note The returned value by this function must to be freed by calling hid_free_enumeration(), + when not needed anymore. + */ + struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id); + + /** @brief Free an enumeration Linked List + + This function frees a linked list created by hid_enumerate(). + + @ingroup API + @param devs Pointer to a list of struct_device returned from + hid_enumerate(). + */ + void HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs); + + /** @brief Open a HID device using a Vendor ID (VID), Product ID + (PID) and optionally a serial number. + + If @p serial_number is NULL, the first device with the + specified VID and PID is opened. + + @ingroup API + @param vendor_id The Vendor ID (VID) of the device to open. + @param product_id The Product ID (PID) of the device to open. + @param serial_number The Serial Number of the device to open + (Optionally NULL). + + @returns + This function returns a pointer to a #hid_device object on + success or NULL on failure. + Call hid_error(NULL) to get the failure reason. + + @note The returned object must be freed by calling hid_close(), + when not needed anymore. + */ + HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number); + + /** @brief Open a HID device by its path name. + + The path name be determined by calling hid_enumerate(), or a + platform-specific path name can be used (eg: /dev/hidraw0 on + Linux). + + @ingroup API + @param path The path name of the device to open + + @returns + This function returns a pointer to a #hid_device object on + success or NULL on failure. + Call hid_error(NULL) to get the failure reason. + + @note The returned object must be freed by calling hid_close(), + when not needed anymore. + */ + HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path); + + /** @brief Write an Output report to a HID device. + + The first byte of @p data[] must contain the Report ID. For + devices which only support a single report, this must be set + to 0x0. The remaining bytes contain the report data. Since + the Report ID is mandatory, calls to hid_write() will always + contain one more byte than the report contains. For example, + if a hid report is 16 bytes long, 17 bytes must be passed to + hid_write(), the Report ID (or 0x0, for devices with a + single report), followed by the report data (16 bytes). In + this example, the length passed in would be 17. + + hid_write() will send the data on the first OUT endpoint, if + one exists. If it does not, it will send the data through + the Control Endpoint (Endpoint 0). + + @ingroup API + @param dev A device handle returned from hid_open(). + @param data The data to send, including the report number as + the first byte. + @param length The length in bytes of the data to send. + + @returns + This function returns the actual number of bytes written and + -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT HID_API_CALL hid_write(hid_device *dev, const unsigned char *data, size_t length); + + /** @brief Read an Input report from a HID device with timeout. + + Input reports are returned + to the host through the INTERRUPT IN endpoint. The first byte will + contain the Report number if the device uses numbered reports. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param data A buffer to put the read data into. + @param length The number of bytes to read. For devices with + multiple reports, make sure to read an extra byte for + the report number. + @param milliseconds timeout in milliseconds or -1 for blocking wait. + + @returns + This function returns the actual number of bytes read and + -1 on error. + Call hid_error(dev) to get the failure reason. + If no packet was available to be read within + the timeout period, this function returns 0. + */ + int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds); + + /** @brief Read an Input report from a HID device. + + Input reports are returned + to the host through the INTERRUPT IN endpoint. The first byte will + contain the Report number if the device uses numbered reports. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param data A buffer to put the read data into. + @param length The number of bytes to read. For devices with + multiple reports, make sure to read an extra byte for + the report number. + + @returns + This function returns the actual number of bytes read and + -1 on error. + Call hid_error(dev) to get the failure reason. + If no packet was available to be read and + the handle is in non-blocking mode, this function returns 0. + */ + int HID_API_EXPORT HID_API_CALL hid_read(hid_device *dev, unsigned char *data, size_t length); + + /** @brief Set the device handle to be non-blocking. + + In non-blocking mode calls to hid_read() will return + immediately with a value of 0 if there is no data to be + read. In blocking mode, hid_read() will wait (block) until + there is data to read before returning. + + Nonblocking can be turned on and off at any time. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param nonblock enable or not the nonblocking reads + - 1 to enable nonblocking + - 0 to disable nonblocking. + + @returns + This function returns 0 on success and -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *dev, int nonblock); + + /** @brief Send a Feature report to the device. + + Feature reports are sent over the Control endpoint as a + Set_Report transfer. The first byte of @p data[] must + contain the Report ID. For devices which only support a + single report, this must be set to 0x0. The remaining bytes + contain the report data. Since the Report ID is mandatory, + calls to hid_send_feature_report() will always contain one + more byte than the report contains. For example, if a hid + report is 16 bytes long, 17 bytes must be passed to + hid_send_feature_report(): the Report ID (or 0x0, for + devices which do not use numbered reports), followed by the + report data (16 bytes). In this example, the length passed + in would be 17. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param data The data to send, including the report number as + the first byte. + @param length The length in bytes of the data to send, including + the report number. + + @returns + This function returns the actual number of bytes written and + -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *dev, const unsigned char *data, size_t length); + + /** @brief Get a feature report from a HID device. + + Set the first byte of @p data[] to the Report ID of the + report to be read. Make sure to allow space for this + extra byte in @p data[]. Upon return, the first byte will + still contain the Report ID, and the report data will + start in data[1]. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param data A buffer to put the read data into, including + the Report ID. Set the first byte of @p data[] to the + Report ID of the report to be read, or set it to zero + if your device does not use numbered reports. + @param length The number of bytes to read, including an + extra byte for the report ID. The buffer can be longer + than the actual report. + + @returns + This function returns the number of bytes read plus + one for the report ID (which is still in the first + byte), or -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *dev, unsigned char *data, size_t length); + + /** @brief Get a input report from a HID device. + + Since version 0.10.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 10, 0) + + Set the first byte of @p data[] to the Report ID of the + report to be read. Make sure to allow space for this + extra byte in @p data[]. Upon return, the first byte will + still contain the Report ID, and the report data will + start in data[1]. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param data A buffer to put the read data into, including + the Report ID. Set the first byte of @p data[] to the + Report ID of the report to be read, or set it to zero + if your device does not use numbered reports. + @param length The number of bytes to read, including an + extra byte for the report ID. The buffer can be longer + than the actual report. + + @returns + This function returns the number of bytes read plus + one for the report ID (which is still in the first + byte), or -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT HID_API_CALL hid_get_input_report(hid_device *dev, unsigned char *data, size_t length); + + /** @brief Close a HID device. + + @ingroup API + @param dev A device handle returned from hid_open(). + */ + void HID_API_EXPORT HID_API_CALL hid_close(hid_device *dev); + + /** @brief Get The Manufacturer String from a HID device. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param string A wide string buffer to put the data into. + @param maxlen The length of the buffer in multiples of wchar_t. + + @returns + This function returns 0 on success and -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *dev, wchar_t *string, size_t maxlen); + + /** @brief Get The Product String from a HID device. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param string A wide string buffer to put the data into. + @param maxlen The length of the buffer in multiples of wchar_t. + + @returns + This function returns 0 on success and -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT_CALL hid_get_product_string(hid_device *dev, wchar_t *string, size_t maxlen); + + /** @brief Get The Serial Number String from a HID device. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param string A wide string buffer to put the data into. + @param maxlen The length of the buffer in multiples of wchar_t. + + @returns + This function returns 0 on success and -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *dev, wchar_t *string, size_t maxlen); + + /** @brief Get The struct #hid_device_info from a HID device. + + Since version 0.13.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 13, 0) + + @ingroup API + @param dev A device handle returned from hid_open(). + + @returns + This function returns a pointer to the struct #hid_device_info + for this hid_device, or NULL in the case of failure. + Call hid_error(dev) to get the failure reason. + This struct is valid until the device is closed with hid_close(). + + @note The returned object is owned by the @p dev, and SHOULD NOT be freed by the user. + */ + struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_get_device_info(hid_device *dev); + + /** @brief Get a string from a HID device, based on its string index. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param string_index The index of the string to get. + @param string A wide string buffer to put the data into. + @param maxlen The length of the buffer in multiples of wchar_t. + + @returns + This function returns 0 on success and -1 on error. + Call hid_error(dev) to get the failure reason. + */ + int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *dev, int string_index, wchar_t *string, size_t maxlen); + + /** @brief Get a string describing the last error which occurred. + + This function is intended for logging/debugging purposes. + + This function guarantees to never return NULL. + If there was no error in the last function call - + the returned string clearly indicates that. + + Any HIDAPI function that can explicitly indicate an execution failure + (e.g. by an error code, or by returning NULL) - may set the error string, + to be returned by this function. + + Strings returned from hid_error() must not be freed by the user, + i.e. owned by HIDAPI library. + Device-specific error string may remain allocated at most until hid_close() is called. + Global error string may remain allocated at most until hid_exit() is called. + + @ingroup API + @param dev A device handle returned from hid_open(), + or NULL to get the last non-device-specific error + (e.g. for errors in hid_open() or hid_enumerate()). + + @returns + A string describing the last error (if any). + */ + HID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *dev); + + /** @brief Get a runtime version of the library. + + This function is thread-safe. + + @ingroup API + + @returns + Pointer to statically allocated struct, that contains version. + */ + HID_API_EXPORT const struct hid_api_version* HID_API_CALL hid_version(void); + + + /** @brief Get a runtime version string of the library. + + This function is thread-safe. + + @ingroup API + + @returns + Pointer to statically allocated string, that contains version string. + */ + HID_API_EXPORT const char* HID_API_CALL hid_version_str(void); + +#ifdef __cplusplus +} +#endif + +#endif + diff --git a/hidapi/include/hidapi_winapi.h b/hidapi/include/hidapi_winapi.h new file mode 100644 index 0000000..884712a --- /dev/null +++ b/hidapi/include/hidapi_winapi.h @@ -0,0 +1,58 @@ +/******************************************************* + HIDAPI - Multi-Platform library for + communication with HID devices. + + libusb/hidapi Team + + Copyright 2022, All Rights Reserved. + + At the discretion of the user of this library, + this software may be licensed under the terms of the + GNU General Public License v3, a BSD-Style license, or the + original HIDAPI license as outlined in the LICENSE.txt, + LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt + files located at the root of the source distribution. + These files may also be found in the public source + code repository located at: + https://github.com/libusb/hidapi . +********************************************************/ + +/** @file + * @defgroup API hidapi API + * + * Since version 0.12.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 12, 0) + */ + +#ifndef HIDAPI_WINAPI_H__ +#define HIDAPI_WINAPI_H__ + +#include + +#include "hidapi.h" + +#ifdef __cplusplus +extern "C" { +#endif + + /** @brief Get the container ID for a HID device. + + Since version 0.12.0, @ref HID_API_VERSION >= HID_API_MAKE_VERSION(0, 12, 0) + + This function returns the `DEVPKEY_Device_ContainerId` property of + the given device. This can be used to correlate different + interfaces/ports on the same hardware device. + + @ingroup API + @param dev A device handle returned from hid_open(). + @param guid The device's container ID on return. + + @returns + This function returns 0 on success and -1 on error. + */ + int HID_API_EXPORT_CALL hid_winapi_get_container_id(hid_device *dev, GUID *container_id); + +#ifdef __cplusplus +} +#endif + +#endif diff --git a/hidapi/x64/hidapi.dll b/hidapi/x64/hidapi.dll new file mode 100644 index 0000000..55a11e9 Binary files /dev/null and b/hidapi/x64/hidapi.dll differ diff --git a/hidapi/x64/hidapi.lib b/hidapi/x64/hidapi.lib new file mode 100644 index 0000000..c8dd7f7 Binary files /dev/null and b/hidapi/x64/hidapi.lib differ diff --git a/hidapi/x64/hidapi.pdb b/hidapi/x64/hidapi.pdb new file mode 100644 index 0000000..44ceb28 Binary files /dev/null and b/hidapi/x64/hidapi.pdb differ diff --git a/hidapi/x86/hidapi.dll b/hidapi/x86/hidapi.dll new file mode 100644 index 0000000..192a5bf Binary files /dev/null and b/hidapi/x86/hidapi.dll differ diff --git a/hidapi/x86/hidapi.lib b/hidapi/x86/hidapi.lib new file mode 100644 index 0000000..65a0322 Binary files /dev/null and b/hidapi/x86/hidapi.lib differ diff --git a/hidapi/x86/hidapi.pdb b/hidapi/x86/hidapi.pdb new file mode 100644 index 0000000..0c3d64c Binary files /dev/null and b/hidapi/x86/hidapi.pdb differ diff --git a/main.c b/main.c new file mode 100644 index 0000000..16d2e81 --- /dev/null +++ b/main.c @@ -0,0 +1,93 @@ +/** + +* Goal + +This program sets the function keys for the Logitech K380 bluetooth keyboard on Windows. +Having the F1-F12 without pressing the Fn key is nice for developers. + +I wanted a simple way to do the same as the Options/Options+ software WITHOUT their +continuously running processes. + +* How to build + +- prerequisite : install mingw +- build setFnKeys.exe with : + gcc main.c -o dist/setFnKeys.exe -I hidapi/include -L hidapi/x86 -lhidapi +- build setMediaKeys.exe with : + gcc main.c -D setMediaKeys -o dist/setMediaKeys.exe -I hidapi/include -L hidapi/x86 -lhidapi + +* Inspiration + +code from : https://github.com/keighrim/k810fn/blob/master/win/k810fn/k810fnCLI.cpp +values from : https://github.com/jergusg/k380-function-keys-conf/blob/master/k380_conf.c + +*/ + +#include // printf +#include // wchar_t + +#include + +#define MAX_STR 255 + +int main(int argc, char *argv[]) +{ + int seq_len = 7; + const unsigned char k380_seq_fkeys_on[] = {0x10, 0xff, 0x0b, 0x1e, 0x00, 0x00, 0x00}; + const unsigned char k380_seq_fkeys_off[] = {0x10, 0xff, 0x0b, 0x1e, 0x01, 0x00, 0x00}; + int k380_vid = 0x46d; + int k380_pid = 0xb342; + static const int TARGET_USAGE = 1; + static const int TARGET_USAGE_PAGE = 65280; + + int res; + int result = -1; + unsigned char buf[65]; + wchar_t wstr[MAX_STR]; + hid_device *handle; + struct hid_device_info *devs, *cur_dev; + + // Initialize the hidapi library + res = hid_init(); + + devs = hid_enumerate(k380_vid, k380_pid); + cur_dev = devs; + + while (cur_dev) + { + if (cur_dev->usage == TARGET_USAGE && cur_dev->usage_page == TARGET_USAGE_PAGE) + { + handle = hid_open_path(cur_dev->path); + +#ifdef setMediaKeys + printf("Set media keys as default"); + res = hid_write(handle, k380_seq_fkeys_off, seq_len); +#else + printf("Set function keys as default"); + res = hid_write(handle, k380_seq_fkeys_on, seq_len); +#endif + + if (res != seq_len) + { + printf("error: %ls\n", hid_error(handle)); + } + + hid_close(handle); + if (res < 0) + { + result = -1; + break; + } + else + { + result = 0; + break; + } + } + cur_dev = cur_dev->next; + } + hid_free_enumeration(devs); + + hid_exit(); + return result; +} \ No newline at end of file