C# 调用 Google Earth Com API开发(二)
2009-05-22 08:29:53 来源:WEB开发网继《C#调用GoogleEarth Com API开发(一)》,我Neil又带给大家第二篇文章。这一篇文章在第一篇的基础上,展示如何调用Windows API将GoogleEarth的界面隐藏掉,并将GoogleEarth的地图显示在自定义的窗体上。废话少说,直接上代码。
1、主窗口代码:
1: // 功能:GE实例(二)
2: // 描述:GE COM API 网址:http://earth.google.com/comapi/index.html
3: // 作者:温伟鹏
4: // 日期:2009-02-08
5:
6: using System;
7: using System.Collections.Generic;
8: using System.ComponentModel;
9: using System.Data;
10: using System.Drawing;
11: using System.Text;
12: using System.Windows.Forms;
13: using EARTHLib;
14:
15: namespace GEDemo
16: {
17: public partial class Form2 : Form
18: {
19: /// <summary>
20: /// 用来关闭GoogleEarth的消息定义
21: /// </summary>
22: static readonly Int32 WM_QUIT = 0x0012;
23:
24: private IntPtr GEHWnd = (IntPtr)5;
25: private IntPtr GEHrender = (IntPtr)5;
26: private IntPtr GEParentHrender = (IntPtr)5;
27: /// <summary>
28: /// 定义GE应用程序类
29: /// </summary>
30: private ApplicationGEClass GeApp;
31:
32: public Form2()
33: {
34: InitializeComponent();
35: }
36:
37: protected override void OnLoad(EventArgs e)
38: {
39: base.OnLoad(e);
40:
41: if (!this.DesignMode)
42: {
43: GeApp = new ApplicationGEClass();
44:
45: GEHWnd = (IntPtr)GeApp.GetMainHwnd();
46:
47: NativeMethods.SetWindowPos(GEHWnd, NativeMethods.HWND_BOTTOM, 0, 0, 0, 0,
48: NativeMethods.SWP_NOSIZE + NativeMethods.SWP_HIDEWINDOW);
49:
50: GEHrender = (IntPtr)GeApp.GetRenderHwnd();
51: GEParentHrender = (IntPtr)NativeMethods.GetParent(GEHrender);
52:
53: NativeMethods.MoveWindow(GEHrender, 0, 0, this.Width, this.Height, true);
54:
55: NativeMethods.SetParent(GEHrender, this.Handle);
56: }
57: }
58:
59: protected override void OnClosing(CancelEventArgs e)
60: {
61: base.OnClosing(e);
62:
63: NativeMethods.PostMessage(GeApp.GetMainHwnd(), WM_QUIT, 0, 0);
64: }
65: }
66: }
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