diff --git a/cpp/winsharedutils/screenshot.cpp b/cpp/winsharedutils/screenshot.cpp
index cda53b2f87e..c18dcd5bc2f 100644
--- a/cpp/winsharedutils/screenshot.cpp
+++ b/cpp/winsharedutils/screenshot.cpp
@@ -184,8 +184,9 @@ std::vector<byte> __gdi_screenshot(HWND hwnd, RECT rect)
     ReleaseDC(hwnd, hdc);
     return std::move(bf);
 }
-DECLARE_API void gdi_screenshot(HWND hwnd, RECT rect, void (*cb)(byte *, size_t))
+DECLARE_API void gdi_screenshot(HWND hwnd, void (*cb)(byte *, size_t))
 {
+    RECT rect{-1, -1, -1, -1};
     auto bf = __gdi_screenshot(hwnd, rect);
     if (bf.size())
         cb(bf.data(), bf.size());
diff --git a/py/LunaTranslator/myutils/hwnd.py b/py/LunaTranslator/myutils/hwnd.py
index 71a41f923e5..5dbc4ea8153 100644
--- a/py/LunaTranslator/myutils/hwnd.py
+++ b/py/LunaTranslator/myutils/hwnd.py
@@ -73,14 +73,14 @@ def callback_1(callback_origin, uid, tocliponly, p: QPixmap, fn):
     if not hwnd:
         return
     hwnd = windows.GetAncestor(hwnd)
-    p = gdi_screenshot(-1, -1, -1, -1, hwnd)
+    p = safepixmap(winsharedutils.gdi_screenshot(hwnd))
     callback(p, fname + "_gdi." + app)
     isshit = (not callback_origin) and (not tocliponly)
     if p.isNull() or isshit:
 
         @threader
         def _():
-            p = winrt_capture_window(hwnd)
+            p = safepixmap(winrtutils.winrt_capture_window(hwnd))
             callback(p, fname + "_winrt." + app)
 
         _()
@@ -95,7 +95,7 @@ def _():
 
             @threader
             def _():
-                p = winrt_capture_window(hwnd)
+                p = safepixmap(winrtutils.winrt_capture_window(hwnd))
                 callback(p, fname + "_winrt_magpie." + app)
 
             _()
@@ -263,21 +263,6 @@ def safepixmap(bs):
     return pixmap
 
 
-def crop_image(x1, y1, x2, y2, hwnd=None):
-    bs = winsharedutils.crop_image(x1, y1, x2, y2, hwnd)
-    return safepixmap(bs)
-
-
-def gdi_screenshot(x1, y1, x2, y2, hwnd=None):
-    bs = winsharedutils.gdi_screenshot(x1, y1, x2, y2, hwnd)
-    return safepixmap(bs)
-
-
-def winrt_capture_window(hwnd):
-    bs = winrtutils.winrt_capture_window(hwnd)
-    return safepixmap(bs)
-
-
 def subprochiderun(cmd, cwd=None, encoding="utf8") -> subprocess.CompletedProcess:
 
     startupinfo = subprocess.STARTUPINFO()
diff --git a/py/LunaTranslator/myutils/ocrutil.py b/py/LunaTranslator/myutils/ocrutil.py
index 7d6fb9dd7c1..e876db1a2ed 100644
--- a/py/LunaTranslator/myutils/ocrutil.py
+++ b/py/LunaTranslator/myutils/ocrutil.py
@@ -2,14 +2,14 @@
 from myutils.config import globalconfig, _TR
 from qtsymbols import *
 from myutils.commonbase import ArgsEmptyExc
-from myutils.hwnd import crop_image
+from myutils.hwnd import safepixmap
 from myutils.utils import stringfyerror, qimage2binary
 from traceback import print_exc
-import threading, gobject
+import threading, gobject, winsharedutils
 
 
 def imageCut(hwnd, x1, y1, x2, y2) -> QImage:
-    pix = crop_image(x1, y1, x2, y2, hwnd)
+    pix = safepixmap(winsharedutils.crop_image(x1, y1, x2, y2, hwnd))
     image = pix.toImage()
     gobject.baseobject.maybesetimage(image)
     return image
diff --git a/py/LunaTranslator/winsharedutils.py b/py/LunaTranslator/winsharedutils.py
index 41f1d326d3a..8ce30d55bd6 100644
--- a/py/LunaTranslator/winsharedutils.py
+++ b/py/LunaTranslator/winsharedutils.py
@@ -259,13 +259,25 @@ def collect_running_pids(pids):
 
 
 _gdi_screenshot = utilsdll.gdi_screenshot
-_gdi_screenshot.argtypes = HWND, RECT, c_void_p
+_gdi_screenshot.argtypes = HWND, c_void_p
 
-crop_image = utilsdll.crop_image
-crop_image.argtypes = HWND, RECT, c_void_p
+_crop_image = utilsdll.crop_image
+_crop_image.argtypes = HWND, RECT, c_void_p
 
 
-def __gdi_screenshot(f, x1, y1, x2, y2, hwnd=None):
+def gdi_screenshot(hwnd):
+    ret = []
+
+    def cb(ptr, size):
+        ret.append(cast(ptr, POINTER(c_char))[:size])
+
+    _gdi_screenshot(hwnd, CFUNCTYPE(None, c_void_p, c_size_t)(cb))
+    if len(ret) == 0:
+        return None
+    return ret[0]
+
+
+def crop_image(x1, y1, x2, y2, hwnd=None):
     rect = RECT()
     rect.left = x1
     rect.top = y1
@@ -276,15 +288,12 @@ def __gdi_screenshot(f, x1, y1, x2, y2, hwnd=None):
     def cb(ptr, size):
         ret.append(cast(ptr, POINTER(c_char))[:size])
 
-    f(hwnd, rect, CFUNCTYPE(None, c_void_p, c_size_t)(cb))
+    _crop_image(hwnd, rect, CFUNCTYPE(None, c_void_p, c_size_t)(cb))
     if len(ret) == 0:
         return None
     return ret[0]
 
 
-gdi_screenshot = functools.partial(__gdi_screenshot, _gdi_screenshot)
-crop_image = functools.partial(__gdi_screenshot, crop_image)
-
 maximum_window = utilsdll.maximum_window
 maximum_window.argtypes = (HWND,)
 setbackdropX = utilsdll.setbackdropX