int main(int argc, char ** argv)
{
// Start the Application
QgsApplication app(argc, argv, true);
QString myPluginsDir = "/home/timlinux/apps/lib/qgis";
QString myLayerPath = "/home/timlinux/gisdata/brazil/BR_Cidades/";
QString myLayerBaseName = "Brasil_Cap";
QString myProviderName = "ogr";
// Instantiate Provider Registry
QgsProviderRegistry::instance(myPluginsDir);
// create a maplayer instance
QgsVectorLayer * mypLayer =
new QgsVectorLayer(myLayerPath, myLayerBaseName, myProviderName);
QgsSingleSymbolRenderer *mypRenderer = new QgsSingleSymbolRenderer(mypLayer->geometryType());
QList <QgsMapCanvasLayer> myLayerSet;
mypLayer->setRenderer(mypRenderer);
if (mypLayer->isValid())
{
qDebug("Layer is valid");
}
else
{
qDebug("Layer is NOT valid");
}
// Add the Vector Layer to the Layer Registry
QgsMapLayerRegistry::instance()->addMapLayer(mypLayer, TRUE);
// Add the Layer to the Layer Set
myLayerSet.append(QgsMapCanvasLayer(mypLayer, TRUE));
// Create the Map Canvas
QgsMapCanvas * mypMapCanvas = new QgsMapCanvas(0, 0);
mypMapCanvas->setExtent(mypLayer->extent());
mypMapCanvas->enableAntiAliasing(true);
mypMapCanvas->setCanvasColor(QColor(255, 255, 255));
mypMapCanvas->freeze(false);
// Set the Map Canvas Layer Set
mypMapCanvas->setLayerSet(myLayerSet);
mypMapCanvas->setVisible(true);
mypMapCanvas->refresh();
// Start the Application Event Loop
return app.exec();
}
