NTGraph介绍 word版本.doc-资料库

juvelele-3402349-16359647490063361768.doc.pdf-第1页.png

第1页 / 共14页

juvelele-3402349-16359647490063361768.doc.pdf-第2页.png

第2页 / 共14页

juvelele-3402349-16359647490063361768.doc.pdf-第3页.png

第3页 / 共14页

juvelele-3402349-16359647490063361768.doc.pdf-第4页.png

第4页 / 共14页

juvelele-3402349-16359647490063361768.doc.pdf-第5页.png

第5页 / 共14页

juvelele-3402349-16359647490063361768.doc.pdf-第6页.png

第6页 / 共14页

juvelele-3402349-16359647490063361768.doc.pdf-第7页.png

第7页 / 共14页

juvelele-3402349-16359647490063361768.doc.pdf-第8页.png

第8页 / 共14页

   Download source files - 381 Kb Download demo projects - 200 Kb Download control binaries - 72 Kb Introduction This is a simple OCX control, which allows you to plot two-dimensional data. Despite the large set of controls that comes with VC++, there is no out-of-the-box control that provides a simple and straightforward 2D data visualization. The ActiveX control tutorial by Kapil Chaturvedi inspired me to write my own control, mostly because I wanted to customize the source code when needed. Over time, the functionality of the ActiveX control became more elaborate, and finally I made decision to publish what I have in hand. What Can It Do? The control is able to plot a large number of points and updating one or more plots on the graph with new data, replacing the old plot with the new plot. Multiple plots with individual properties such as name, line and point style, width, could be customized at runtime. At runtime, the control is capable of displaying its own property pages (double click on the control area or by invoking the ShowProperties method) and showing short help as a result of the user pressing F1 while the control has the focus. By setting the TrackMode property you should be able to switch between a different modes such as tracking cursor coordinates while moving (left

mouse button pressed), zooming, XY-, X-, and Y-panning. Finally the control snapshot could be copied to the clipboard, printed, or saved as a bitmap file. Whatdoesn'tit do? You cannot plot 3D data, but you can use the NTGraph3D ATL/STL/OpenGL activeX control to do that :-)! What'sNew?   The Log Axes Mode works now, showing the log10 grid, and appropriated labels, it also converts the graph element's data The control's snapshot could be now saved as a bitmap file, many thanks to Robert Harber for providing the code!  Added abilities to dynamically creating annotation labels, that can be on different colors, orientations, and also could be hidden or visible.  Added "Annotations" property page that provides fully access to the annotation list in the real/design mode.  Added abilities to dynamically drawing of multiply cursors, with a different colors, crosshair styles, floating/fixed, or snapped to the currently selected element!  Added "Cursors" property page that provides fully access to the cursor list in the real/design mode.  Added axis formatting, that allows a customization of the bottom and left axis labels.  Added "Format" property page that provides access to the axis format properties, and a templates for of commonly used data formats such a: Numbers, Exponential, Symbolic, Date, and Time!  Added Time format for the graph axes. To use it, you should set the XTime/YTime property to True. You also have to convert the date/time data to double format. The Date/Time format is implemented as a as a floating-point value, measuring days from midnight, 30 December 1899. So, midnight, 31 December 1899 is represented by 1.0. Similarly, 6 AM, 1 January 1900 is represented by 2.25, and midnight, 29 December 1899 is 1.0. However, 6 AM, 29 December 1899 is 1.25. For more info refer to MSDN for the class:COleDateTime! Howtotest thecontrol You can use the ActiveX Control Test Container, and load the Test.dsm macro from the menu Tools\Macros... You can write your own routines to test the control behavior (look at Test.dsm macro)

How to use the control To use this OCX control, embed it in an application that supports the use of OCX controls. Microsoft Visual Basic applications, Office applications and applications created with the Microsoft Developer Studio’s AppWizard can support the use of OCX controls. There are two files required to use this control. They are:  NTGraph.hlp -The help file for this control.  NTGraph.ocx -The NTGraph controls code and data. Before the ActiveX control can be used in your application, it must be registered as a COM Component in the system registry. This is a self registering control. This means that to register the control in the system registry you only need to have an application load the control and call the control’s exported function DllRegisterServer. You can use the REGSVR32 utility or have your setup program do this. HowtousetheREGSVR32 utility? Copy NTGraph.ocx to your directory and type: regsvr32 NTGraph.ocx regsvr32 /u NTGraph.ocx (Unregister server) Customizing The Control You can change the properties of this control during design time, or in run time to affect how the control will plot the data. Use the new control property pages: Graph Property Page

Elements Property Page Annotations Property Page

Cursors Property Page Format Property Page

You can include the control in your project by following the standard steps for ActiveX controls: 1. Create MFC Dialog project or MDI/SDI project with View class derived from CFormView 2. Choose menu Project|Add To Project|Components and Controls... 3. Open the Registered ActiveX Control gallery 4. Choose the NTGraph Control and click Insert 5. Visual C++ will generate the class CNTGraph 6. Then you can define variable of the type as CNTGraph. The control's customization options are straightforward: // Customize Graph Properties m_Graph.SetBackColor (RGB(0,0,0)); m_Graph.SetAxisColor (RGB(0,255,0)); m_Graph.SetLabelColor (RGB(128,255,255)); // Control's Frame and Plot area options m_Graph.SetFrameColor((RGB(0,0,0)); m_Graph.SetPlotAreaColor(RGB(212,222,200)); m_Graph.SetFrameStyle(2) // (1) - Flat // (2) - Scope (raised frame and sunken plot area borders) // (3) - 3DFrame (a bitmap frame picture) m_Graph.SetGridColor(RGB(192,192,192));

m_Graph.SetShowGrid (TRUE); m_Graph.SetCursorColor (RGB(255,0,0)); m_Graph.SetTrackMode (1); m_Graph.SetGraphTitle("XY Plot"); m_Graph.SetXLabel ("X Axis"); m_Graph.SetYLabel("Y Axis"); m_Graph.SetRange(0.,10,-1,1.); You don't need to call the control Invalidate() function every time you change a Graph property. The changes are automatically reflected on the control appearance. To load the data into the control... Collapse // // // Customize Graph Elements // // // The Graph elements are dynamically allocated! // Element 0 is allocated by default // Even after a call to the ClearGraph method, // the Element-0 is automaticaly allocated. m_Graph.SetElementLineColor(RGB(255,0,0)); m_Graph.SetElementLinetype(0); m_Graph.SetElementWidth(1); m_Graph.SetElementPointColor(RGB(0,0,255); m_Graph.SetElementPointSymbol(3); m_Graph.SetElementSolidPoint(TRUE); // Allocate a new element: Element-1 m_Graph.AddElement(); m_Graph.SetElementColor (RGB(0,255,0)); m_Graph.SetElementLinewidth(1); m_Graph.SetElementLinetype(2); // Allocate a new element: Element-2 m_Graph.AddElement();

m_Graph.SetElementColor (RGB(0,0,255)); m_Graph.SetElementLinetype(3); // Now change again the properties of Element-1 m_Graph.SetElement(1); m_Graph.SetElementColor (RGB(0,0,255)); ... // // Load Data int the Graph Elements // double y; for (int i = 0; i < NumberOfElements; i++) { for (int x = 0; x < NumberOfPoints; x++) { y = (double)rand() / RAND_MAX * 10.0; y = y / 3 + 10.0 / 2 * i + 1; m_Graph.PlotXY(x, y, i); // or PlotY(double data, long ElementID) } } Thesamestory forVisual Basic Users: With NTGraph1 .PlotAreaColor = vbBlack .FrameStyle = Frame .Caption = "" .XLabel = "" .YLabel = "" .ClearGraph 'delete all elements and create a new one .ElementLineColor = RGB(255, 255, 0) .AddElement ' Add second elements .ElementLineColor = vbGreen For X = 0 To 100 Y = Sin(X / 3.15) * Rnd - 1 .PlotY Y, 0

资料库

NTGraph介绍 word版本.doc

相关推荐

课程资源

热门标签

最新资料