readme.txt

GIS地理信息系统开发。 大名鼎鼎的MAPX＋DELPHI7.0软件开发

Note: This sample application and corresponding sample code is provided 
for example purposes only.  It has not undergone rigorous testing
and as such should not be shipped as part of a final application
without extensive testing on the part of the organization releasing
the end-user product.

The included code is a Delphi 4.0 example using the MapInfo MapX OCX 4.0.  
The sample code and executable show you some of the basics of using the OCX.

The default geoset is USA based and can not be changed in the program.  The 
program gives you a menu with options File, Tools, Datasets, Layers.

File -  		Exit:  closes the application

Tools -	Selector: 	uses MapX selector tool
	ZoomIn: 	Tool to zoom in on map
	ZoomOut:	Tool to zoom out on map
	Pan:		Tool to pan map
	Custom:  	Ruler	Custom line tool to determine distance between points.
			To use, click and hold mouse button down, drag and then release.

Datasets -	ODBC:		Adds a Dataset using an ODBC recordsource and does a Ranged
  				theme on the data.
				To use:  you must create an Access ODBC Datasource called
 				MapStatsV4 that points to the MapStats.mdb Access database that ships
 				with MapX

		UnBound		Adds a Dataset using and UnBound recordsource.  This uses the
 				OnRequestData event to read the data from an array that is generated
 				on form activation.  An Individual Theme is then generated for this
 				data.

		Remove All	Removes all datasets

Layers -	Layer Control	Brings up layer control form