0

嗨，我正在开发一个解析数据的应用程序，然后我想使用 MapInfo 在地图上可视化一些数据，我正确创建了一个 MapInfo 实例，但直到现在我不知道如何在实例上显示数据或如何使用它即使在我可见之后，我创建的实例也不可见。

下面是我的代码

namespace JA3_Trace_Viewer
{
public partial class JA3Main : Form
{
    public JA3Main()
    {
        InitializeComponent();
    }

    private void JA3Main_Load(object sender, EventArgs e)
    {

        MapInfo.MapInfoApplication mapinfoinstance = new MapInfo.MapInfoApplication();
        mapinfoinstance.Visible = true;
        DDockWindow winM = new DDockWindow();
        winM.Activate();            
    }
}

我想在地图上可视化的数据是经度和纬度，另一列可以称它们为数据，所以请帮助我。

提前致谢。

新代码：

    public partial class Form1 : Form
{
    // Sets the parent of a window.
    [DllImport("User32", CharSet = CharSet.Auto, ExactSpelling = true)]
    internal static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndParent);

    //Sets window attributes
    [DllImport("USER32.DLL")]
    public static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

    //Gets window attributes
    [DllImport("USER32.DLL")]
    public static extern int GetWindowLong(IntPtr hWnd, int nIndex);

    //assorted constants needed
    public static int GWL_STYLE = -16;
    public static int WS_CHILD = 0x40000000; //child window
    public static int WS_BORDER = 0x00800000; //window with border
    public static int WS_DLGFRAME = 0x00400000; //window with double border but no title
    public static int WS_CAPTION= WS_BORDER | WS_DLGFRAME; //window with a title bar
    public static int WS_MAXIMIZE = 0x1000000;

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        // Create a new instance of MapInfo.
        MapInfoApplication mapinfo = new MapInfoApplication();

        // Get the handle to the whole MapInfo application.
        // 9 = SYS_INFO_MAPINFOWND.
        string handle = mapinfo.Eval("SystemInfo(9)");

        // Convert the handle to an IntPtr type.
        IntPtr oldhandle = new IntPtr(Convert.ToInt32(handle));

        //Make mapinfo visible otherwise it won't show up in our control.
        mapinfo.Visible = true;

        //Set the parent of MapInfo to a picture box on the form.
        SetParent(oldhandle, this.pictureBox1.Handle);

        //Get current window style of MapInfo window
        int style = GetWindowLong(oldhandle, GWL_STYLE);

        //Take current window style and remove WS_CAPTION(title bar) from it
        SetWindowLong(oldhandle, GWL_STYLE, (style & ~WS_CAPTION));

        //Maximize MapInfo so that it fits into our control.
        mapinfo.Do("Set Window 1011 Max");
    }
}
4

1 回答 1

0

类MapInfoApplication有一个名为Do()and的方法Eval()，在那里你可以传递一个命令字符串，例如mapinfoinstance.Do('Open Table foo_bar.TAB as foo')

查看 MapBasic 文件夹中文件夹中的 MapBasic 示例Samples\DOTNET\...。

于 2015-03-17T14:41:18.653 回答