This demo is the result of the project explained in the wiki tutorial
"Writing a mini spreadsheet application"
http://wiki.lazarus.freepascal.org/FPSpreadsheet_tutorial:_Writing_a_mini_spreadsheet_application
An extended version of this demo is "spready" which can be found in the
applications folder of the Lazarus Components and Code Repository.
FPSpreadsheetControls are a set of visual components which facilitate creation
of a spreadsheet application.
TsWorkbookSource is the base of the package: it links the visual components to a
worksheet instance.
TsWorkbookTabControl is a TabControl which displays tabs for each worksheet
of the workbook. Changing the active tab selects the corresponding worksheet.
TsWorksheetGrid is a grid component which displays the contents of a worksheet.
It communicates with the TsWorkbookSource by receiving and sending messages
on the selected cell.
TsCellEdit is a multi-line edit control (memo) for entering cell values and
formulas. Pressing ENTER transfers the current text into the worksheet.
TsCellIndicator is a simple edit used to display the address of the currently
selected cell. Editing the text allows to jump to the cell address.
TsSpreadsheetInspector is a StringGrid (ValueListEditor, to be precise) which
displays details on the workbook, the selected worksheet, and the selected
cell values and properties.
Linking these controls to a TsWorkbookSource results in a working spreadsheet
application without writing any line of code.