Window Resize + Mouse
Client-only fix — clicks and drags stay accurate when the player resizes the game window.
When players resize the Metin2 window in windowed mode, the backbuffer changes but UI code often still assumes the old size — or mouse input uses raw pixels while widgets use a different mapping. Clicks miss inventory slots, taskbar buttons, and dialog controls.
This pack fixes the two critical pieces: PythonApplicationProcedure reacts to WM_SIZE with matching SetScreenSize + SetResolution and triggers OnResolutionUpdate; PythonWindowManager corrects SetMousePosition ratios and drag clamping.
Pure client C++ — merge 1.Svn patches, rebuild EterPythonLib and UserInterface, done. If you later install GUI Scale, that bundle already includes these mouse/resize fixes plus logical UI zoom.