使用C#实现MapInfo自动化

Question

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，我正确地制作了一个MapInfo实例，但到目前为止，我不知道如何在实例上显示数据或如何使用它，我创建的实例即使在可见后也不可见。

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();            
    }
}

我想要在地图上可视化的数据是经度和纬度，另一列称为数据，所以如果你能帮我的话。

提前谢谢。

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");
    }
}

Answer 1

类MapInfoApplication有一个名为Do()和Eval()的方法，您可以在其中传递命令字符串，例如mapinfoinstance.Do('Open Table foo_bar.TAB as foo')

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