Add API: GetPreeditWindowPosition

This is for GLFW3: glfwGetPreeditCursorPos

Author: daipom

src/raylib.h

@@ -1111,6 +1111,7 @@ RLAPI int GetKeyPressed(void);                                // Get key pressed
 RLAPI int GetCharPressed(void);                               // Get char pressed (unicode), call it multiple times for chars queued, returns 0 when the queue is empty
 RLAPI void SetPreeditCallback(PreeditCallback callback);      // Set a callback for preedit
 RLAPI void SetPreeditWindowPosition(int x, int y);            // Set a preedit window postion XY
+RLAPI void GetPreeditWindowPosition(int *x, int *y);          // Get a preedit window postion XY
 
 // Input-related functions: gamepads
 RLAPI bool IsGamepadAvailable(int gamepad);                   // Check if a gamepad is available

src/rcore.c

@@ -3560,6 +3560,12 @@ void SetPreeditWindowPosition(int x, int y)
     glfwSetPreeditCursorPos(CORE.Window.handle, x, y, 0);
 }
 
+// Get a preedit window postion XY
+void GetPreeditWindowPosition(int *x, int *y)
+{
+    glfwGetPreeditCursorPos(CORE.Window.handle, x, y, NULL);
+}
+
 // Set a custom key to exit program
 // NOTE: default exitKey is ESCAPE
 void SetExitKey(int key)