winebus.sys: Add some buttons to HID keyboard input report.

dlls/winebus.sys/controller.h

@@ -33,7 +33,7 @@ static const BYTE REPORT_HEADER[] = {
 #define IDX_HEADER_USAGE 3
 
 static const BYTE REPORT_BUTTONS[] = {
-    USAGE_PAGE(1, HID_USAGE_PAGE_BUTTON),
+    USAGE_PAGE(1, /* placeholder */ HID_USAGE_PAGE_BUTTON),
     USAGE_MINIMUM(1, /* placeholder */ 1),
     USAGE_MAXIMUM(1, /* placeholder */ 3),
     LOGICAL_MINIMUM(1, 0),
@@ -44,6 +44,7 @@ static const BYTE REPORT_BUTTONS[] = {
     REPORT_SIZE(1, 1),
     INPUT(1, Data|Var|Abs),
 };
+#define IDX_BUTTON_USAGE_PAGE 1
 #define IDX_BUTTON_MIN_USAGE 3
 #define IDX_BUTTON_MAX_USAGE 5
 #define IDX_BUTTON_COUNT 15

dlls/winebus.sys/main.c

@@ -546,12 +546,14 @@ static NTSTATUS keyboard_get_reportdescriptor(DEVICE_OBJECT *device, BYTE *buffe
 {
     TRACE("buffer %p, length %u.\n", buffer, length);
 
-    *ret_length = sizeof(REPORT_HEADER) + sizeof(REPORT_TAIL);
-    if (length < sizeof(REPORT_HEADER) + sizeof(REPORT_TAIL))
+    *ret_length = sizeof(REPORT_HEADER) + sizeof(REPORT_BUTTONS) + sizeof(REPORT_TAIL);
+    if (length < sizeof(REPORT_HEADER) + sizeof(REPORT_BUTTONS) + sizeof(REPORT_TAIL))
         return STATUS_BUFFER_TOO_SMALL;
 
     memcpy(buffer, REPORT_HEADER, sizeof(REPORT_HEADER));
-    memcpy(buffer + sizeof(REPORT_HEADER), REPORT_TAIL, sizeof(REPORT_TAIL));
+    add_button_block(buffer + sizeof(REPORT_HEADER), 0, 101);
+    buffer[sizeof(REPORT_HEADER) + IDX_BUTTON_USAGE_PAGE] = HID_USAGE_PAGE_KEYBOARD;
+    memcpy(buffer + sizeof(REPORT_HEADER) + sizeof(REPORT_BUTTONS), REPORT_TAIL, sizeof(REPORT_TAIL));
     buffer[IDX_HEADER_PAGE] = HID_USAGE_PAGE_GENERIC;
     buffer[IDX_HEADER_USAGE] = HID_USAGE_GENERIC_KEYBOARD;