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Using the MS Chart control in VC++

, 14 Jun 2003
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Setting data and labels on the MS Chart control using VC++
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The following is the description for using the MS Chart control in VC++. The diagram below will give you an idea of the chart we are going to make.

First insert the chart control in your project using Project->Add Reference->Microsoft Chart Control. Next is populating the chart control. When I was working with Visual Basic I had used a data source to pass data to the chart. But in VC++ ,I did not get the datasource method in the initial tries. So I passed the chart data through a COleSafeArray. Thanks to J L Colson for illuminating the details in his article on code project.

Here is the code snippet for that.

//First create a safe array
COleSafeArray saRet;


sab[0].cElements =noOfRows; // give this exactly the number of rows you
                               display in your chart
sab[1].cElements = 5;       // number of columns + 1 (because the first
                            // column is where we put the row labels,
                            // ie in 1.1, 2.1, 3.1, 4,1 etc

sab[0].lLbound = sab[1].lLbound = 1;

// Use the chart as the backdrop of the legend.

// Create the safe-array...

saRet.Create(VT_BSTR, 2, sab);

long index[2] = { 0, 0 };   //a 2D graph needs a 2D array as index array
BSTR bstr;
index[0] = 1;
FILEDETAILS filedetailsstruct; // this is just a datastructure I used,
                               // pls see attached code
CString cstemp;

// m_filedetails is an STL list of filedetailsstruct
// in this loop we populate the safe array
for (i = m_filedetails.begin(); i != m_filedetails.end(); i++)
    filedetailsstruct = (FILEDETAILS *) i;
    index[1] = 1;

    // make sure this cannot be converted to a valid number like "54" and
    // is a valid string like "John"
    bstr = filedetailsstruct.login.AllocSysString(); // Row label
    saRet.PutElement(index, bstr);

    index[1] = 2;
    bstr = filedetailsstruct.n9000.AllocSysString(); // Data for column 1
    saRet.PutElement(index, bstr);
    index[1] = 3;
      bstr = filedetailsstruct.n9002.AllocSysString(); // Data for column 2
    saRet.PutElement(index, bstr);
    index[1] = 4;
    bstr = filedetailsstruct.n9004.AllocSysString(); // Data for column 3
    saRet.PutElement(index, bstr);

    index[1] = 5;
    bstr = filedetailsstruct.nCancel.AllocSysString();// Data for column 4
    saRet.PutElement(index, bstr);


//now hand over the safe array to the chart control

Our chart data will look like this:

2,1  2,2  2,3  2,4  2,5
1,1  1,2  1,3  1,4  1,5

where 1,1 - Row label 1 2,1 - Row Label 2

Okay now to label the columns:


Thats it folks.



Developed On Windows 2000 Server using VC++ ver 6


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About the Author

Alex C. Punnen
India India
Hi everyone!! Sometimes I get real stumped with some concepts and that gets me excited.So I say - hey let me explore - and there I go!! .Currently I am working as software engineer for Nokia Siemens Networks, Bangalore -India.My dream subject - Physics!!

Comments and Discussions

Generaltext over bars Pinmembermarcdev2-Aug-05 5:50 
AnswerRe: text over bars Pinmemberchris17531-Mar-06 3:43 
Generalbar colors Pinmembermarcdev19-Jul-05 23:18 
GeneralRe: bar colors Pinmembermarcdev20-Jul-05 6:32 
GeneralRe: bar colors Pinmemberchris17531-Mar-06 3:52 
Generalflickering problem Pinmembersayup30-Jun-05 21:47 
Generaladding resource file of thew control Pinmembersayup30-Jun-05 21:43 
Generalsimple plotting of x,y values PinmemberKrishna Seetharaman6-Mar-05 20:14 
QuestionHow import Ms Chart to my project? Pinmembermw81120-Feb-05 22:08 
AnswerRe: How import Ms Chart to my project? PinmemberKrishna Seetharaman6-Mar-05 20:18 
GeneralRe: How import Ms Chart to my project? Pinmembermw8117-Mar-05 20:44 
QuestionHow to hide grid line in the plot Pinmembervinubhai26-Apr-04 3:19 
AnswerRe: How to hide grid line in the plot Pinmemberbrngupta2-Nov-04 21:40 
GeneralRe: How to hide grid line in the plot PinmemberAnanth.tm13-Oct-06 10:01 
QuestionUse MS Chart Control for free? Pinmembermarathom23-Apr-04 4:32 
AnswerRe: Use MS Chart Control for free? Pinmemberbrngupta2-Nov-04 21:33 
Generalit's a hag Pinmembertimepalette19-Feb-04 23:51 
GeneralRe: it's a hag Pinmemberbrngupta2-Nov-04 21:36 
Generalcolors of the Graphs PinmemberVasudevacharyulu27-Aug-03 2:56 
GeneralRe: colors of the Graphs Pinmemberbrngupta2-Nov-04 21:44 
GeneralRe: colors of the Graphs Pinmemberchris17531-Mar-06 3:50 
GeneralX and Y labels; Zoom Pinmemberdjteambse6-Aug-03 1:20 
GeneralRe: X and Y labels; Zoom PinmemberKrishna Seetharaman6-Mar-05 20:12 
GeneralRe: X and Y labels; Zoom PinmemberAnanth.tm13-Oct-06 10:05 
GeneralOffice version Pinmemberjbradync23-Jun-03 7:17 
GeneralRe: Office version PinmemberAstrona20-Apr-05 12:41 
Questioncontrol is missing - where can i get it from ? Pinmembercsc15-Jun-03 21:21 
AnswerRe: control is missing - where can i get it from ? Pinmemberjbradync16-Jun-03 2:24 
GeneralRe: control is missing - where can i get it from ? Pinmembercsc16-Jun-03 4:19 

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