OSK size limit check

diff --git a/od-win32/win32gfx.cpp b/od-win32/win32gfx.cpp
index a5d305c6efa76e9f7dccdd06f4aee89b7b7c3cdd..c93bbdd82e3c0db6144a5134ee1fdc880785f9a4 100644 (file)
--- a/od-win32/win32gfx.cpp
+++ b/od-win32/win32gfx.cpp
@@ -4590,12 +4590,14 @@ static void draw_key(HDC hdc, void *bm, int bmw, int bmh, struct extoverlay *eo,
        TextOut(hdc, 10, 10, key, len);
        int offsetx = 10;
        int offsety = 10 - 1;
-       for (int y = 0; y < fh + 2; y++) {
+       for (int y = 0; y < fh + 2 && y < bmh; y++) {
+               int eox = (int)(sx + 0.5f);
+               int eoy = (int)(sy + 0.5f) + y;
                uae_u8 *src = (uae_u8 *)bm + (y + offsety) * bmw + offsetx;
-               uae_u8 *dst = eo->data + (int)(sx + 0.5f) * 4 + ((int)(sy + 0.5f) + y) * eo->width * 4;
+               uae_u8 *dst = eo->data + eox * 4 + eoy * eo->width * 4;
                for (int x = 0; x < bmw; x++) {
                        uae_u8 b = *src++;
-                       if (b == 2) {
+                       if (b == 2 && eox >= 0 && eox < eo->width && eoy >= 0 && eoy < eo->height) {
                                drawpixel(dst, OSD_KB_COLOR, OSD_KB_TRANSPARENCY);
                        }
                        dst += 4;