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Home » Developing U++ » U++ Developers corner » Question: Simple plugin implementation
Re: Question: Simple plugin implementation [message #30862 is a reply to message #30861] Tue, 25 January 2011 15:34 Go to previous messageGo to previous message
mirek is currently offline  mirek
Messages: 13980
Registered: November 2005
Ultimate Member
koldo wrote on Tue, 25 January 2011 08:50

Hello

This is other focus. It permits adding plugins just by adding files without touching base class. It is based on Painter example.

For example to add Excel support, it would be:

#include <Core/Core.h>

using namespace Upp;

#include "Spreadsheet.h"

class ExcelSpreadsheet : public SpreadsheetPlugin {
	Spreadsheet_METHOD_LIST
};

ExcelSpreadsheet excelSpreadsheet;

INITBLOCK {
	RegisterPlugin("Excel", dynamic_cast<SpreadsheetPlugin *>(&excelSpreadsheet));
}

bool ExcelSpreadsheet::Open(const char *filename) {
	puts("ExcelSpreadsheet::Open");
	return false; 
}

bool ExcelSpreadsheet::SetData(int row, int col, Value val) {
	puts("ExcelSpreadsheet::SetData");
	return false;
}






I guess even better pattern can be found with RasterImage...
 
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