Draw a graph for the library. Contains a variety of small controls can be drawn when the real curve. 6.0.0 version of the pre-installed with the approach is different. I remember the installation directory under the plug qwt library file test to Designer' s plugin folder.

qwt-6.0.0-rc5
.............\INSTALL
.............\src
.............\...\qwt_abstract_slider.cpp
.............\...\qwt_plot_item.cpp
.............\...\src.pro
.............\...\qwt_plot_directpainter.cpp
.............\...\qwt_plot_intervalcurve.h
.............\...\qwt_plot_picker.cpp
.............\...\qwt_scale_div.h
.............\...\qwt_compass_rose.cpp
.............\...\qwt.h
.............\...\qwt_painter.h
.............\...\qwt_round_scale_draw.cpp
.............\...\qwt_abstract_scale.h
.............\...\qwt_scale_draw.h
.............\...\qwt_text_engine.cpp
.............\...\qwt_arrow_button.h
.............\...\qwt_plot_scaleitem.cpp
.............\...\qwt_plot_zoomer.h
.............\...\qwt_plot_item.h
.............\...\qwt_plot_magnifier.h
.............\...\qwt_system_clock.cpp
.............\...\qwt_plot_spectrocurve.h
.............\...\qwt_symbol.h
.............\...\qwt_plot_seriesitem.cpp
.............\...\qwt_dial.h
.............\...\qwt_plot_rescaler.cpp
.............\...\qwt_color_map.cpp
.............\...\qwt_plot_svgitem.h
.............\...\qwt_plot_marker.cpp
.............\...\qwt_counter.cpp
.............\...\qwt_double_range.h
.............\...\qwt_scale_engine.cpp
.............\...\qwt_sampling_thread.cpp
.............\...\qwt_scale_div.cpp
.............\...\qwt_curve_fitter.h
.............\...\qwt_spline.h
.............\...\qwt_plot_spectrocurve.cpp
.............\...\qwt_plot_layout.h
.............\...\qwt_plot_canvas.h
.............\...\qwt_plot.cpp
.............\...\qwt_wheel.h
.............\...\qwt_magnifier.cpp
.............\...\qwt_plot_spectrogram.h
.............\...\qwt_legend.cpp
.............\...\qwt_plot_axis.cpp
.............\...\qwt_slider.cpp
.............\...\qwt_series_data.h
.............\...\qwt_thermo.h
.............\...\qwt_painter.cpp
.............\...\qwt_plot_dict.cpp
.............\...\qwt_counter.h
.............\...\qwt_event_pattern.h
.............\...\qwt_plot_rasteritem.cpp
.............\...\qwt_dial_needle.cpp
.............\...\qwt_plot_grid.cpp
.............\...\qwt_plot_xml.cpp
.............\...\qwt_symbol.cpp
.............\...\qwt_clipper.cpp
.............\...\qwt_text_label.cpp
.............\...\qwt_wheel.cpp
.............\...\qwt_sampling_thread.h
.............\...\qwt_abstract_slider.h
.............\...\qwt_plot_zoomer.cpp
.............\...\qwt_analog_clock.cpp
.............\...\qwt_legend_item.h
.............\...\qwt_scale_map.cpp
.............\...\qwt_plot_magnifier.cpp
.............\...\qwt_matrix_raster_data.h
.............\...\qwt_picker.cpp
.............\...\qwt_compass.h
.............\...\qwt_global.h
.............\...\qwt_plot_panner.h
.............\...\qwt_plot_spectrogram.cpp
.............\...\qwt_panner.cpp
.............\...\qwt_matrix_raster_data.cpp
.............\...\qwt_plot.h
.............\...\qwt_math.cpp
.............\...\qwt_interval.h
.............\...\qwt_legend.h
.............\...\qwt_plot_rescaler.h
.............\...\qwt_plot_directpainter.h
.............\...\qwt_abstract_scale_draw.cpp
.............\...\qwt_arrow_button.cpp
.............\...\qwt_plot_grid.h
.............\...\qwt_curve_fitter.cpp
.............\...\qwt_analog_clock.h
.............\...\qwt_knob.cpp
.............\...\qwt_column_symbol.h
.............\...\qwt_panner.h
.............\...\qwt_raster_data.cpp
.............\...\qwt_dial_needle.h
.............\...\qwt_picker.h
.............\...\qwt_interval_symbol.h
.............\...\qwt_point_3d.cpp
.............\...\qwt_slider.h
.............\...\qwt_dial.cpp
.............\...\qwt_color_map.h
.............\...\qwt_plot_renderer.h

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