Hi,
when I run the following code the update of the TGraph gets slower and slower.
On windows there even occurs finaly an error and the program dies.
#include <TRint.h>
#include <TGFrame.h>
#include <TRootEmbeddedCanvas.h>
#include <TGraph.h>
#include <TCanvas.h>
#include <Riostream.h>
class TestFrame : public TGMainFrame
{
public:
TestFrame():TGMainFrame(0,700,700)
{
int j;
TRootEmbeddedCanvas *fCanvas = new TRootEmbeddedCanvas("Canvas", this, 800, 400);
AddFrame(fCanvas,new TGLayoutHints(kLHintsLeft | kLHintsExpandX | kLHintsExpandY, 0, 0, 1, 1));
TGraph *fGraph = new TGraph(1024);
SetSize(GetDefaultSize());
while (true) {
for (j=0 ; j<1024 ; j++) {
fGraph->SetPoint(j, j,rand());
}
fGraph->Draw("AL");
fCanvas->GetCanvas()->Modified();
fCanvas->GetCanvas()->Update();
MapSubwindows();
MapWindow();
}
}
};
int main(int argc, char *argv[])
{
TApplication theApp(“TestFrame”, &argc, argv);
TestFrame *frame = new TestFrame();
theApp.Run();
return 0;
}
Matthias