Why params.rgrc[0].top -= 1; ？

[Pansvfj]

请问为什么要减去1

[Pansvfj]

请问谁可以帮忙一下吗？因为这个一行，窗口高度好像变得不准了

[PaddleStroke]

FYI I changed this case to

    case WM_NCCALCSIZE:
    {
        if (msg->wParam == TRUE) {
            NCCALCSIZE_PARAMS& params = *reinterpret_cast<NCCALCSIZE_PARAMS*>(msg->lParam);

            // Check if the window is maximized
            if (::IsZoomed(msg->hwnd)) {
                // Get the monitor info for the window
                HMONITOR hMonitor = ::MonitorFromWindow(msg->hwnd, MONITOR_DEFAULTTONEAREST);
                MONITORINFO monitorInfo = {};
                monitorInfo.cbSize = sizeof(monitorInfo);
                ::GetMonitorInfo(hMonitor, &monitorInfo);

                // Adjust the client area to account for the invisible borders
                params.rgrc[0].left = monitorInfo.rcWork.left;
                params.rgrc[0].top = monitorInfo.rcWork.top;
                params.rgrc[0].right = monitorInfo.rcWork.right;
                params.rgrc[0].bottom = monitorInfo.rcWork.bottom;
            }
            else {
                // For non-maximized windows, adjust the client area to remove the non-client area
                if (params.rgrc[0].top != 0)
                    params.rgrc[0].top -= 1;
            }

            *result = WVR_REDRAW;
            return true;
        }
    }

And also I'm not using the case WM_GETMINMAXINFO that I commented out.

And that solved an issue I had with a cropping of the window when maximized.

[PaddleStroke]

I found what :
if (params.rgrc[0].top != 0)
params.rgrc[0].top -= 1;

is supposed to do. It's supposed to fix a visual bug when you resize the window. Without it, when you resize there's an ugly white borders on the side you're resizing. It's writen on the commit if you look at the blame on github