fix c build warnings

internal/native/cgo/ctrl.c

@@ -30,8 +30,17 @@ void jetkvm_set_video_handler(jetkvm_video_handler_t *handler) {
     video_handler = handler;
 }
 
+static jetkvm_indev_handler_t *jetkvm_indev_handler = NULL;
+
+static void jetkvm_indev_wrapper(lv_event_code_t code) {
+    if (jetkvm_indev_handler != NULL) {
+        (*jetkvm_indev_handler)((int)code);
+    }
+}
+
 void jetkvm_set_indev_handler(jetkvm_indev_handler_t *handler) {
-    lvgl_set_indev_handler(handler);
+    jetkvm_indev_handler = handler;
+    lvgl_set_indev_handler(jetkvm_indev_wrapper);
 }
 
 void jetkvm_set_rpc_handler(jetkvm_rpc_handler_t *handler) {
@@ -45,8 +54,7 @@ void jetkvm_call_rpc_handler(const char *method, const char *params) {
 }
 
 const char *jetkvm_ui_event_code_to_name(int code) {
-    lv_event_code_t cCode = (lv_event_code_t)code;
-    return lv_event_code_get_name(code);
+    return lv_event_code_get_name((lv_event_code_t)code);
 }
 
 void video_report_format(bool ready, const char *error, u_int16_t width, u_int16_t height, double frame_per_second)
@@ -386,7 +394,7 @@ char *jetkvm_video_get_edid_hex() {
     if (edid_len < 0) {
         return NULL;
     }
-    return bytes_to_hex(edid, edid_len);
+    return (char *)bytes_to_hex(edid, edid_len);
 }
 
 jetkvm_video_state_t *jetkvm_video_get_status() {
@@ -394,7 +402,7 @@ jetkvm_video_state_t *jetkvm_video_get_status() {
 }
 
 char *jetkvm_video_log_status() {
-    return videoc_log_status();
+    return (char *)videoc_log_status();
 }
 
 int jetkvm_video_init() {

internal/native/cgo/edid.c

@@ -117,8 +117,6 @@ const char *videoc_log_status()
 {
     int fd;
     char *buffer = NULL;
-    size_t buffer_size = 0;
-    ssize_t bytes_read;
 
     fd = open(V4L_SUBDEV, O_RDWR);
     if (fd < 0)

internal/native/cgo/screen.c

@@ -11,8 +11,8 @@
 #include "ui_index.h"
 #include "ctrl.h"
 
-#define DISP_BUF_SIZE (300 * 240 * 2)
-static lv_color_t buf[DISP_BUF_SIZE];
+// #define DISP_BUF_SIZE (300 * 240 * 2)
+// static lv_color_t buf[DISP_BUF_SIZE];
 
 indev_handler_t *indev_handler = NULL;
 
@@ -97,8 +97,8 @@ void lvgl_set_rotation(lv_display_t *disp, u_int16_t rotation) {
     }
 
     log_info("refreshing objects");
-    lv_obj_report_style_change(&flex_screen_style);
-    lv_obj_report_style_change(&flex_screen_menu_style);
+    lv_obj_report_style_change(flex_screen_style);
+    lv_obj_report_style_change(flex_screen_menu_style);
 }
 
 uint32_t custom_tick_get(void)
@@ -151,7 +151,7 @@ const char *ui_get_current_screen() {
     return NULL;
 }
 
-lv_img_dsc_t *ui_get_image(const char *name) {
+const lv_img_dsc_t *ui_get_image(const char *name) {
     for (size_t i = 0; i < ui_images_size; i++) {
         if (strcmp(ui_images[i].name, name) == 0) {
             return ui_images[i].img;

internal/native/cgo/screen.h

@@ -41,8 +41,15 @@ lv_style_t *ui_get_style(const char *name);
  * @brief Get the image with the given name
  *
  * @param name The name of the image
- * @return lv_img_dsc_t* The image with the given name
+ * @return const lv_img_dsc_t* The image with the given name
  */
-lv_img_dsc_t *ui_get_image(const char *name);
+const lv_img_dsc_t *ui_get_image(const char *name);
+
+/**
+ * @brief Get the current screen name
+ *
+ * @return const char* The name of the current screen
+ */
+const char *ui_get_current_screen();
 
 #endif // SCREEN_H

internal/native/eez/src/ui/actions.c

@@ -1,6 +1,7 @@
 #include "actions.h"
 #include "screens.h"
 #include <stdio.h>
+#include <string.h>
 #include "ui.h"
 #include "vars.h"
 
@@ -81,7 +82,6 @@ const int REBOOT_HOLD_TIME = 5;
 
 void action_reset_config(lv_event_t * e) {
     lv_event_code_t event_code = lv_event_get_code(e);
-    lv_obj_t *obj = lv_event_get_target(e);
     
     if (event_code == LV_EVENT_PRESSED) {
         t_reset_config = lv_tick_get();
@@ -112,7 +112,6 @@ void action_reset_config(lv_event_t * e) {
 
 void action_reboot(lv_event_t * e) {
     lv_event_code_t event_code = lv_event_get_code(e);
-    lv_obj_t *obj = lv_event_get_target(e);
     
     if (event_code == LV_EVENT_PRESSED) {
         t_reboot = lv_tick_get();