Form.FormBorderStyle本机异常访问冲突

我从来没有见过这种情况,这会让我觉得在CF甚至你的应用程序中,这不太可能是一个问题。

您的设备是否有足够的内存运行应用程序?内存不足的情况应该抛出一个OOM,但我见过它做过其他不太可预测的事情,所以它总是第一件要检查的事情。

如果不是内存问题,您确定这不是平台问题吗?记住,由于操作系统的很大一部分是由原始设备制造商开发的,所以不能排除操作系统中的问题。

我会尝试两件事:

1. 同一个应用程序在其他硬件(甚至模拟器)上运行正常吗?如果它在其他硬件上工作,那么它严重地将平台作为问题牵连在一起。

2. 因为在C语言中使用一个小应用程序是相当容易的,所以我建议在C/C++中构建一个应用程序,该应用程序执行相同的功能项,以查看它是否运行或给出相同的问题。

这似乎是netcfagl3_5.dll中的一个错误(将通知Microsoft)

当我们使用pinvokes(setwindowlong)设置formborderstyle时,我们无法重现问题。

如果有人遇到这种罕见的错误,这是不使用.NET设置FormBorderStyle的代码 窗体风格 财产。

private const uint WS_OVERLAPPED = 0x00000000;
        private const uint WS_POPUP = 0x80000000;
        private const uint WS_CHILD = 0x40000000;
        private const uint WS_MINIMIZE = 0x20000000;
        private const uint WS_VISIBLE = 0x10000000;
        private const uint WS_DISABLED = 0x08000000;
        private const uint WS_CLIPSIBLINGS = 0x04000000;
        private const uint WS_CLIPCHILDREN = 0x02000000;
        private const uint WS_MAXIMIZE = 0x01000000;
        private const uint WS_CAPTION = 0x00C00000;
        private const uint WS_BORDER = 0x00800000;
        private const uint WS_DLGFRAME = 0x00400000;
        private const uint WS_VSCROLL = 0x00200000;
        private const uint WS_HSCROLL = 0x00100000;
        private const uint WS_SYSMENU = 0x00080000;
        private const uint WS_THICKFRAME = 0x00040000;
        private const uint WS_GROUP = 0x00020000;
        private const uint WS_TABSTOP = 0x00010000;

        private const int WS_MINIMIZEBOX = 0x00020000;
        private const int WS_MAXIMIZEBOX = 0x00010000;

        private const uint WS_EX_DLGMODALFRAME = 0x00000001;
        private const uint WS_EX_NOPARENTNOTIFY = 0x00000004;
        private const uint WS_EX_TOPMOST = 0x00000008;
        private const uint WS_EX_ACCEPTFILES = 0x00000010;
        private const uint WS_EX_TRANSPARENT = 0x00000020;
        private const uint WS_EX_MDICHILD = 0x00000040;
        private const uint WS_EX_TOOLWINDOW = 0x00000080;
        private const uint WS_EX_WINDOWEDGE = 0x00000100;
        private const uint WS_EX_CLIENTEDGE = 0x00000200;
        private const uint WS_EX_CONTEXTHELP = 0x00000400;
        private const uint WS_EX_STATICEDGE = 0x00020000;

        private const int WS_EX_NOANIMATION = 0x04000000;
        public const int GWL_EX_STYLE = -20;
        public const int GWL_STYLE = (-16);

public static void SetNoBorder(Form form) {
            RemoveFormStyle(form, GWL_STYLE, (int)(WS_CAPTION | WS_THICKFRAME | WS_MINIMIZE | WS_MAXIMIZE | WS_SYSMENU));
            RemoveFormStyle(form, GWL_EX_STYLE, (int)(WS_EX_DLGMODALFRAME | WS_EX_CLIENTEDGE | WS_EX_STATICEDGE));
        }

public static void RemoveFormStyle(Form f, int modifier, int style) {
            int currStyle = GetWindowLong(f.Handle, GWL_EX_STYLE);
            currStyle &= ~style;
            SetWindowLong(f.Handle, modifier, currStyle);
        }

    [DllImport("Coredll.dll", SetLastError = true)]
    public static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

    [DllImport("coredll.dll", SetLastError = true)]
    public static extern int GetWindowLong(IntPtr hWnd, int nIndex);