VBA common objects

　　VBA There are four basic concepts in ： object 、 attribute 、 Methods and events .
　　 workbook 、 Worksheet 、 Cell 、 Comments 、 PivotTable 、 AutoShape 、 Names and so on are objects ,VBA It is the language used to process these objects .
First of all ,excel vba Introduction to basic concepts of objects
　　excel vba There are many objects , Each object has its own properties and methods .
　　excel vba What is the object ？VBA Is an object-oriented programming language .
　　Excel The operation of is almost all around the workbook 、 Worksheet 、 Cell expanded , These are the Excel The core object of the operation , These are also VBA Core objects of .
　　 about Excel Come on , The outermost vba Object is Application, On behalf of the entire Excel Applications .
　　 Every Excel file , They all correspond to one Workbook;
　　 Every... In the document Sheet Worksheet , They all correspond to one Worksheet;
　　 Cells in the form , The corresponding is Range object .
　　 From above for excel vba Introduction to objects , You can easily see the hierarchical relationship and containment relationship of each object ：
　　Application The object must contain a Workbooks aggregate , To express Excel Every file in the library ;
　　Workbook The object must include a Worksheets aggregate , To represent all the worksheets it contains ;
　　Worksheet The object must contain Range perhaps Cells object , To identify the cells it contains ;
second ,excel vba Common object display
　　VBA object , The most important are 4 Kind of ：Application,Workbook,Worksheet,Range（ Cell ）.
　　 Here is excel vba Common objects and meanings in objects .
　　Application object ： Represents the whole excel Applications
　　Window object ： Represents a window
　　Worksheet object ： Form a worksheet
　　Sheets object ： Specify a set of all worksheets in the active workbook
　　Shaperange object ： Represents the shape area , Is a set of shapes in the document
　　pivotTable object ： Represents a PivotTable in a worksheet
　　workbook object ： It means a excel Workbooks .
　　Range object ： Represents a cell 、 A line 、 A column 、 A selected area, etc .
　　Name object ： Represents the definition name of the cell range .
　　Chart object ： Represents the chart in the workbook
　　Filedialog object ： Provide file dialog .
　　Commandbarpopup object ： Represents a pop-up control on the command bar
　　Commandbar object ： Represents the command bar .
Third ,excel vba Object summary
　　VBA Operations on objects always follow this format ： object . attribute 、 object . Method 、 parent object . Sub object . attribute .
　　excel vba object , It can also be defined like ordinary variables .
　　Dim testBook As Workbook
　　Dim testSheet As Worksheet
　　Dim testRange As Range