Bar Graph Control






4.62/5 (23 votes)
Jan 27, 2004

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Simple bar graph control class derived from CStatic
Introduction
Here is a simple bar graph control class derived from CStatic
. It supports displaying real-time data, using any number of bars with different colors, using scale both in cm and inch, etc.
Using the code
How to add this control to your project:
- Copy files GraphCtrl.h and GraphCtrl.cpp to your project directory, and add to your project.
- Include GraphCtrl.h in files where you need to use this class.
- Change
CStatic
definitions toCGraphCtrl
. - Use the API described below.
int SetNumberOfBars(int num) //Sets the number of bars you want to display. //If successful, it returns number of bars set, otherwise -1.int SetBarColor(int idx, COLORREF clr) //Sets the color for the bars. idx is the index of the //bar from left to right (1,2,3..etc.) //If successful, it returns index of the bar for which //the color was set, otherwise -1.void SetUnit(int unit) //Sets the scale to cm or inch. Send UCM for cm and UINCH for inchvoid SetBarValue(int idx, int value) //Sets the value of a bar. idx is the index of the bar //for which the value to be set and //the parameter value is the value we have to set for it.
Example of Use
m_Graph.SetNumberOfBars(18); //Number of bars to be shown m_Graph.SetBarColor(1,RGB(200,200,200)); //Sets the color to the bar of index 1 m_Graph.SetBarValue(1,22); //Sets value to the bar of index 1 m_Graph.SetUnit(UCM); //Sets scale to cm