📄 c# mapx之一--黑暗之痕.htm
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</SPAN>ToolsList.Add(MapXLib.ToolConstants.miTextTool);
</FONT>
<P><FONT color=#444444></FONT></P></SPAN></I></B>
<P><FONT color=#444444></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"
align=left><B><I><SPAN lang=EN-US
style="FONT-FAMILY: 宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt"><FONT
color=#444444><SPAN
style="mso-tab-count: 1">
</SPAN>ToolsList.Add(MapXLib.ToolConstants.miZoomInTool);
</FONT>
<P><FONT color=#444444></FONT></P></SPAN></I></B>
<P><FONT color=#444444></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"
align=left><B><I><SPAN lang=EN-US
style="FONT-FAMILY: 宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt"><FONT
color=#444444><SPAN
style="mso-tab-count: 1">
</SPAN>ToolsList.Add(MapXLib.ToolConstants.miZoomOutTool);
</FONT>
<P><FONT color=#444444></FONT></P></SPAN></I></B>
<P><FONT color=#444444></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"
align=left><B><I><SPAN lang=EN-US
style="FONT-FAMILY: 宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt"><FONT
color=#444444> </FONT>
<P><FONT color=#444444></FONT></P></SPAN></I></B>
<P><FONT color=#444444></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"
align=left><B><I><SPAN lang=EN-US
style="FONT-FAMILY: 宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt"><FONT
color=#444444><SPAN
style="mso-tab-count: 1">
</SPAN>comboBox1.DataSource=ToolsList; </FONT>
<P><FONT color=#444444></FONT></P></SPAN></I></B>
<P><FONT color=#444444></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-outline-level: 1"><SPAN
lang=EN-US
style="FONT-FAMILY: 宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt"><FONT
color=#444444>}</FONT></SPAN><SPAN lang=EN-US
style="FONT-FAMILY: 宋体"><FONT color=#444444>
</FONT>
<P><FONT color=#444444></FONT></P></SPAN>
<P><FONT
color=#444444></FONT></P></TD></TR></TBODY></TABLE></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; mso-outline-level: 1"><SPAN
lang=EN-US style="FONT-FAMILY: 宋体"><FONT color=#444444
size=3> </FONT>
<P><FONT color=#444444 size=3></FONT></P></SPAN>
<P><FONT color=#444444 size=3></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT
size=3><FONT color=#444444><SPAN lang=EN-US><SPAN
style="mso-tab-count: 1"><FONT
face="Times New Roman">
</FONT></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">以上代码通过一个数组</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">ToolsList,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">将</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">MapXLib</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">的工具加入到</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">comboBox1</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">中</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">.MapX</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">还有一些其它的工具</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">它们的作用是往地图上加上点</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">线</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">多边型和圆</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">.</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">因为这些工具要求有操作图层</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">一并在介绍图层的时候介绍</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">.</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">关于</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">ArrayList</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">的用法</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">请参考</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">C#</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">的有关资料</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">.</FONT></SPAN></FONT></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT
size=3><FONT color=#444444><SPAN lang=EN-US><SPAN
style="mso-tab-count: 1"><FONT
face="Times New Roman">
</FONT></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">接着</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">双击</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">comboBox1,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">并编写代码如下</SPAN></FONT></FONT></P>
<P>
<TABLE
style="BORDER-RIGHT: medium none; BORDER-TOP: medium none; BORDER-LEFT: medium none; BORDER-BOTTOM: medium none; BORDER-COLLAPSE: collapse; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-alt: solid windowtext .5pt"
cellSpacing=0 cellPadding=0 border=1>
<TBODY>
<TR>
<TD
style="BORDER-RIGHT: windowtext 0.5pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: windowtext 0.5pt solid; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 0.5pt solid; WIDTH: 426.1pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 0.5pt solid; BACKGROUND-COLOR: transparent"
vAlign=top width=568>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"
align=left><SPAN lang=EN-US
style="COLOR: blue; FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><FONT
color=#444444>private</FONT></SPAN><SPAN
lang=EN-US
style="FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><FONT
color=#444444> <SPAN
style="COLOR: blue">void</SPAN>
comboBox1_SelectedIndexChanged(<SPAN
style="COLOR: blue">object</SPAN> sender,
System.EventArgs e) </FONT>
<P><FONT color=#444444></FONT></P></SPAN>
<P><FONT color=#444444></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"
align=left><SPAN lang=EN-US
style="FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><FONT
color=#444444>{ </FONT>
<P><FONT color=#444444></FONT></P></SPAN>
<P><FONT color=#444444></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: left; mso-layout-grid-align: none"
align=left><SPAN lang=EN-US
style="FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><SPAN
style="mso-tab-count: 1"><FONT
color=#444444>
</FONT></SPAN><B><I><FONT
color=#444444>axMap1.CurrentTool=(MapXLib.ToolConstants)comboBox1.SelectedItem;
</FONT>
<P><FONT color=#444444></FONT></P></I></B></SPAN>
<P><FONT color=#444444></FONT></P>
<P class=MsoNormal
style="MARGIN: 0cm 0cm 0pt"><SPAN lang=EN-US
style="FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><FONT
color=#444444>}</FONT></SPAN></P></TD></TR></TBODY></TABLE></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><FONT
size=3><FONT color=#444444><SPAN lang=EN-US><SPAN
style="mso-tab-count: 1"><FONT
face="Times New Roman">
</FONT></SPAN></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">应注意</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">,</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">在</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">C#</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">中必须要显式地把</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">comboBox1</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">的选择项目</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">SelectedItem(</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">数据类型为</SPAN><SPAN
lang=EN-US><FONT
face="Times New Roman">object)</FONT></SPAN><SPAN
style="FONT-FAMILY: 宋体; mso-hansi-font-family: 'Times New Roman'; mso-ascii-font-family: 'Times New Roman'">转换为</SPAN></FONT></FONT><SPAN
lang=EN-US
style="FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><FONT
color=#444444
size=3>MapXLib.ToolConstants.因为ToolConstants是MapX自己定义的一个枚举数据类型,C#不能自动完成这种枚举成员变量到object的数据转换.
</FONT>
<P><FONT color=#444444 size=3></FONT></P></SPAN>
<P><FONT color=#444444 size=3></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><FONT
size=3><FONT color=#444444><SPAN
style="mso-tab-count: 1">
</SPAN>编译执行程序,从comboBox1中选择不同的工具,在地图上进行操作,你可以了解到MapX工具集的强大功能.
</FONT></FONT>
<P><FONT color=#444444 size=3></FONT></P></SPAN>
<P><FONT color=#444444 size=3></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><FONT
size=3><FONT color=#444444><SPAN
style="mso-tab-count: 1">
</SPAN>实际上,MapX提供的工具集就好像Photoshop,AutoCAD的工具栏一样,为你提供了一些控制地图的工具.但是,在开发GIS的时候,这些工具是不能完全满足要求的.所以,还应该学会自定义工具.
</FONT></FONT>
<P><FONT color=#444444 size=3></FONT></P></SPAN>
<P><FONT color=#444444 size=3></FONT></P>
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt"><SPAN
lang=EN-US
style="FONT-FAMILY: 新宋体; mso-bidi-font-size: 9.0pt; mso-font-kerning: 0pt; mso-hansi-font-family: 'Times New Roman'"><SPAN
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