Ortho Size Changes When I Change The Window Size

Unity Engine
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1

Hi. I wrote two functions that adjust the position of the game window, but each time these functions run, the size of the game objects either increases or decreases. It’s probably a resolution-related issue. I want the size of the game objects to remain the same. How can I solve this problem?

Code:

public void IncreaseWindowHeightByOne()
    {
        int handle = GetActiveWindow();
        RECT windowRect;
        if (GetWindowRect(handle, out windowRect))
        {
            int width = windowRect.right - windowRect.left;
            int height = windowRect.bottom - windowRect.top;
            height += 1;

            SetWindowPos(handle, HWND_TOP, 0, 0, width, height, SWP_NOZORDER | SWP_NOMOVE);
        }
    }

    public void DecreaseWindowHeightByOne()
    {
        int handle = GetActiveWindow();
        RECT windowRect;
        if (GetWindowRect(handle, out windowRect))
        {
            int width = windowRect.right - windowRect.left;
            int height = windowRect.bottom - windowRect.top;
            height -= 1;

            SetWindowPos(handle, HWND_TOP, 0, 0, width, height, SWP_NOZORDER | SWP_NOMOVE);
        }
    }