#Mapinfo basic tutorial how to
#Mapinfo basic tutorial code

The following section explains the syntax of the comma-separated string. The exact format of the string varies, depending on whether the user used a menu command, a 'point-mode' drawing tool, a 'line-mode' drawing tool, etc. If you are using methods to handle custom buttons or menu commands, MapInfo sends a comma-delimited string to your custom method. For example, if you are keeping track of the Map window's current zoom level, you may want to call MapInfo's MapperInfo( ) function to determine the Map window's latest zoom level.

#Mapinfo basic tutorial code

Add code to this method to do whatever processing is necessary in response to the window's changing. If you created a WindowContentsChanged method, MapInfo sends a four-byte integer (representing a MapInfo window ID number) to indicate which Map window has changed. If you want to emulate MapInfo's status bar, add code to this method to display the text somewhere in your user interface. If you created a SetStatusText method, MapInfo sends a simple text string to the method, representing the text that MapInfo would display on the status bar. Within the method(s) that you defined, issue whatever statements are needed to process the arguments sent by MapInfo. Define the custom menu command so that it uses the syntax Calling OLE methodname (using the method name you specified in step 4).Д©. Add statement to add an item to one of MapInfo's shortcut menus). If you want MapInfo to notify your client program whenever the user uses a custom menu command, define a custom menu command (e.g. When the user clicks on your Visual Basic icon or button, send MapInfo a Run Menu Command ID statement so that your custom toolbutton becomes the 'active' MapInfo tool.ДЁ. Therefore, you may want to add an icon, button, or other visible control to your client program's user interface. The user will not see the new custom button. Note that MapInfo's toolbars are hidden, like the rest of MapInfo's user interface. Define the custom button so that it uses the syntax Calling OLE methodname (using the method name you created in step 4). If you want MapInfo to notify your client program when the user uses a custom toolbar button, define a custom button (e.g. After your program launches MapInfo, call MapInfo's SetCallback method, and specify the name of the object:Д§. For example, if you called the class 'CMењњlass', the following Visual Basic statement creates an object of that class:Д¦. Create an object using your custom class. Each of these methods should take one argument: a string.ДҐ. If you want MapInfo to notify your client program whenever custom menu commands or custom buttons are used, create one or more additional method(s), using whatever method names you choose. Define this method so that it takes one argument: a four-byte integer.Д¤. If you want MapInfo to notify your program each time a Map window changes, create a method called WindowContentsChanged. Define this method so that it takes one argument: a string.ДЈ. If you want to emulate MapInfo's status bar, create a method called SetStatusText.

#Mapinfo basic tutorial how to

For details on how to create a class definition, see the documentation for your programming language.Дў. Using Visual Basic 4.0, C++, or any other language that can act as an OLE server, create a class definition that defines one or more OLE methods. The following steps provide an overview of the process of using callbacks through OLE:ДЎ. MsgString:='Set Window Info Parent ' + sWinHand MsgString := 'Set Application Window ' + sWinHand MsgString:='Set Window Ruler Parent ' + sWinHand MsgString := 'Set Window Info Parent ' + sWinHand MsgString := 'Set Next Document Parent ' + sWinHand + ' Style 1' OleMapInfo := CreateOLEObject('MapInfo.Application')