Building the Right Environment to Support AI, Machine Learning and Deep Learning
This control class CLineChartCtrl is derived from CWnd. The original idea and part of the code are from Ken C. Len's CHistogramCtrl. I did some changes to make the control work in multi lines. I was trying to make a CPU usage app that would work both under Windows95/98 and NT, but I failed. I know now how to get CPU usage under Windows 95/98 through the registry (See the article Q174631 from Microsoft). But the code does not work under NT:-).
I found something very interesting in Ndis.vxd(Win95/98) and Ndis.Dll(NT) - there is a function called NdisGetCurrentProcessorCpuUsage(). Will this function solve all the problems? I don't know. I can load the library and receive the address for the function, but I don't have the parameters. If anyone knows anything about it, I will appreciate if you let me know!
The sample project is created and compiled with Visual C++ 5.0 SP3 under Windows 98.
How to use
1. Use the MS Visual C++ dialog editor to place a custom control on the dialog, and enter "LINE_CHART_CTRL" as the Class name.
2. Add a CPieChartCtrl class member in the header file
#include "LineChartCtrl.h" ...CLineChartCtrl m_wndLineChart;
3. Subclass the class member with the control in InitDialog()
//IDC_LINE_CHART_CTRL is the control ID m_wndLineChart.SubclassDlgItem(IDC_LINE_CHART_CTRL, this);
4. Initiate the control
SetTimer(1, 500, NULL); // Create a timer to update the control
5. Add update code in OnTimer(UINT nIDEvent)
m_wndLineChart.SetPos(0,nPos0); // nPos0 is the currect postion m_wndLineChart.SetPos(1,nPos1); // nPos1 is the currect postion m_wndLineChart.SetPos(2,nPos2); // nPos2 is the currect postion m_wndLineChart.Go(); // Make sure that the control updates with the new value
Last updated: 13 August 1998