readme.rtf

GIS地理信息系统开发。大名鼎鼎的MAPX＋VisualBasic6.0软件开发

						ASIA MapX Demo
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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.

Prerequisites:
Before running this application please install the following:
	The latest MapX OCX control
	
	The following controls can be installed by selecting ActiveX option during 	Visual Studio 6.0 installation:
	DBGRID32.OCX


The ASIA MapX demo is a Visual Basic application, which shows a number of things:

1) Loading of a GeoSet, and setting layer properties like zoom layering and      	auto labeling at design time through the Property sheet of the MapX 	control.
2) Data binding using a Visual Basic Data control.
3) Use of 'helper dialogs' for legend control and thematic settings.
4) An event handler that handles the Legend Double Click event to 'modify' the 	theme.
5) An event handler that updates a text box that shows the current zoom level.


IMPORTANT NOTE:
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Please install maps for Asia maps before running this application.

To get this running, you need to make sure the Data Control on the theme1 form points to the MAPSTATS.MDB file loaded into MapX's DATA directory. The database used in the MDB file is ASIA (the Record Source property for the Data control).


The Application has several buttons and menus:

Buttons to control the map:

  Select  - highlights individual features
  Pan - move the map
  Zoom In - zooms in to specified area
  Zoom Out - zooms out

Menus access the following controls:

  File> Exit - Exits the application.
  Map> Layer Control - Accesses map layer controls for adding/removing map data 	layers and auto-labeling map data layers.
  Data> Create Theme - Access thematic mapping functionality, combining map data 	layers with bound demographic data sets.

Other features:

When a legend is displayed (after a thematic map is created), double clicking on the legend displays a dialog allowing you to change styles for the legend or a ranged thematic map.