bitsdojo_window_windows works on Windows 10 or Greater only

[venliong]

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GetDpiForWindow and GetSystemMetricsForDpi minimum supported client is Windows 10, version 1607.

Will this plugin support Windows 7 ?

[bitsdojo]

This is a known issue and a fix is planned. Didn't have any time to do it recently but it is on my to-do list.

[Wishmater]

Please, these should be a priority fix. This is a great plugin but this makes it practically unusable if it will not work on a lot of PCs. Even if some functionalities don't work on older windows versions, at least it should not be a crashing error.

[venliong]

I had made this plugin working on Windows 7, Windows Server 2008/2012/2016/2019 , and Windows 10.

1. GetSystemMetricsForDpi replaced with GetSystemMetrics , and then multi with scale factor.
2. GetDpiForWindow replaced with FlutterDesktopGetDpiForHWND which come from #include <flutter_windows.h>.
3. DwmExtendFrameIntoClientArea can not work on Windows Server, so I change the extendIntoClientArea method into this:

    void extendIntoClientArea(HWND hwnd)
    {
        if(IsWindowsServer() && has_custom_frame == TRUE) {
            SetMenu(hwnd, NULL);
            LONG lStyle = GetWindowLong(hwnd, GWL_STYLE);
            lStyle &= ~(WS_CAPTION | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_SYSMENU | WS_DLGFRAME);
            SetWindowLong(hwnd, GWL_STYLE, lStyle);
            LONG flags = SWP_FRAMECHANGED;
            SetWindowPos(hwnd, NULL, 0, 0, 0, 0, flags);
        } else {
            MARGINS margins = { 0, 0, 1, 0 };
            DwmExtendFrameIntoClientArea(hwnd, &margins);
        }
    }

IsWindowsServer() is come from #include <VersionHelpers.h> 5. bitsdojo_window_windows/lib/src/window.dart has a GetDpiForWindow FFI invoke, it's hard to find something to replace it, so just using 96.

[iampopal]

Having the same issue, when will this get fix?

[Maged12]

me too

[bitsdojo]

Coming in the next update.

[abutcher-gh]

I've just submitted a PR #100 which resolves this. I confess I did the work before checking whether it was already under development. Feel free to take that patch or wait for the official one from @bitsdojo.

[SteveCruise]

Mark this issue! Old windows 7 is needed because my company uses it.

[aldycool]

For Windows 7, use @abutcher-gh solution above, the PR #100. I've tested in on Windows 7 and it works fine. If you clone this repo to local, don't forget to update all pubspec.yaml dependencies to local path also (project, platform interface, and the windows specific).

[sunjhtrustmobi]

I've just submitted a PR #100 which resolves this. I confess I did the work before checking whether it was already under development. Feel free to take that patch or wait for the official one from @bitsdojo.

Thanks for your contribution,. It truly solved my problem but only on flutter of 2.0.4. When I update my flutter to 2.10.1, It doesn't work any more. Have you updated your fltter version? And does it work?

[zijiaxing]

I had made this plugin working on Windows 7, Windows Server 2008/2012/2016/2019 , and Windows 10.

1. GetSystemMetricsForDpi replaced with GetSystemMetrics , and then multi with scale factor.
2. GetDpiForWindow replaced with FlutterDesktopGetDpiForHWND which come from #include <flutter_windows.h>.
3. DwmExtendFrameIntoClientArea can not work on Windows Server, so I change the extendIntoClientArea method into this:

    void extendIntoClientArea(HWND hwnd)
    {
        if(IsWindowsServer() && has_custom_frame == TRUE) {
            SetMenu(hwnd, NULL);
            LONG lStyle = GetWindowLong(hwnd, GWL_STYLE);
            lStyle &= ~(WS_CAPTION | WS_MINIMIZEBOX | WS_MAXIMIZEBOX | WS_SYSMENU | WS_DLGFRAME);
            SetWindowLong(hwnd, GWL_STYLE, lStyle);
            LONG flags = SWP_FRAMECHANGED;
            SetWindowPos(hwnd, NULL, 0, 0, 0, 0, flags);
        } else {
            MARGINS margins = { 0, 0, 1, 0 };
            DwmExtendFrameIntoClientArea(hwnd, &margins);
        }
    }

IsWindowsServer() is come from #include <VersionHelpers.h> 5. bitsdojo_window_windows/lib/src/window.dart has a GetDpiForWindow FFI invoke, it's hard to find something to replace it, so just using 96.

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