added code for auto scanning, but it crashes...

mercuryio/mercuryio.c

@@ -2,13 +2,18 @@
 
 #include <limits.h>
 #include <stdint.h>
+#include <process.h>
 
 #include "mercuryio/mercuryio.h"
 #include "mercuryio/config.h"
 
+static unsigned int __stdcall mercury_io_touch_thread_proc(void *ctx);
+
 static uint8_t mercury_opbtn;
 static uint8_t mercury_gamebtn;
 static struct mercury_io_config mercury_io_cfg;
+static bool mercury_io_touch_stop_flag;
+static HANDLE mercury_io_touch_thread;
 
 uint16_t mercury_io_get_api_version(void)
 {
@@ -65,7 +70,42 @@ HRESULT mercury_io_touch_init(void)
     return S_OK;
 }
 
-HRESULT mercury_io_touch_start(void)
+void mercury_io_touch_start(mercury_io_touch_callback_t callback)
 {
-    return S_OK;
+    if (mercury_io_touch_thread != NULL) {
+        return;
+    }
+
+    mercury_io_touch_thread = (HANDLE) _beginthreadex(
+        NULL,
+        0,
+        mercury_io_touch_thread_proc,
+        callback,
+        0,
+        NULL
+    );
+}
+
+static unsigned int __stdcall mercury_io_touch_thread_proc(void *ctx)
+{
+    mercury_io_touch_callback_t callback;
+    uint8_t pressure[240];
+    size_t i;
+
+    callback = ctx;
+
+    while (!mercury_io_touch_stop_flag) {
+        for (i = 0 ; i < _countof(pressure) ; i++) {
+            if (GetAsyncKeyState(mercury_io_cfg.vk_cell[i]) & 0x8000) {
+                pressure[i] = 128;
+            } else {
+                pressure[i] = 0;
+            }
+        }
+
+        callback(pressure);
+        Sleep(1);
+    }
+
+    return 0;
 }

mercuryio/mercuryio.h

@@ -14,6 +14,7 @@ enum {
     MERCURY_IO_GAMEBTN_VOL_DOWN = 0x02,
 };
 
+typedef void (*mercury_io_touch_callback_t)(const uint8_t *state);
 /* Get the version of the Wacca IO API that this DLL supports. This
    function should return a positive 16-bit integer, where the high byte is
    the major version and the low byte is the minor version (as defined by the
@@ -61,4 +62,4 @@ void mercury_io_get_gamebtns(uint8_t *gamebtn);
 
 HRESULT mercury_io_touch_init(void);
 
-HRESULT mercury_io_touch_start(void);
+void mercury_io_touch_start(mercury_io_touch_callback_t callback);