drilldownsample.txt

GIS地理信息系统开发。大名鼎鼎的MAPX＋VisualBasic6.0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.

This VB 6.0 example uses the MapX Version 4.0 OCX Control.  The main goal 
of this example is to show how to use the Drilldown feature.  

Files:

DrillDownSample.vbp
DrillDownSample.frm
DrillDownSample.frx

Data Files:

DDTestUSA2.TAB  <- contains drilldown information
2Region.TAB
MultiRegionSales.TAB
States.TAB
USAxxx.TAB

Overview:

Please read the chapter regarding Drilldown in the MapX Developer's Guide.  This example shows a simple drilldown sample with sales territories in the United States.

To use the program:

	Click on the "Expand" button
	Click anywhere in the US
	The next level is the major sales territories which should appear quickly
	Click anywhere in the western sales territories
	The next level would be the regions in the western sales territories
	Click anywhere in Region 2
	The next level should be the states
	That is the last level
	In order to go back up, use the "Contract" tool and reverse the process until you 		get back to viewing just the US polygon.