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-rw-r--r--libusb/os/windows_usb.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/libusb/os/windows_usb.h b/libusb/os/windows_usb.h
index 1452224..5da4b9a 100644
--- a/libusb/os/windows_usb.h
+++ b/libusb/os/windows_usb.h
@@ -65,6 +65,7 @@ void inline upperize(char* str) {
#define MAX_PATH_LENGTH 128
#define MAX_KEY_LENGTH 256
#define ERR_BUFFER_SIZE 256
+#define GUID_STRING_LENGTH 40
#define wchar_to_utf8_ms(wstr, str, strlen) WideCharToMultiByte(CP_UTF8, 0, wstr, -1, str, strlen, NULL, NULL)
#define ERRNO GetLastError()