Introduction

1. Start a new Windows Forms Application named SchoolEnrolment2
2. Design the form as follows:
    

   Control Name Text Label   Enrolment / Program ___________________________ Label   Graduates Label   Undergraduates Label   Certificates TextBox txtGraduates 0 TextBox txtUndergraduates 0 TextBox txtCertificates 0 Button btnCreateChart Create Chart PictureBox pbxChart   Label   ____Legend____ Label lblGraduates Graduates Label lblUndergraduates Undergraduates Label lblCertificates Certificates Button btnClose Close

3. To design a bitmap, in the Resource View, right-click SchoolRenrolment2 -> Add -> Resource...
4. In the Add Resource dialog box, click Bitmap and click New
5. In the Properties window, make the following changes:
   Filename: graduates.bmp
   ID: IDB_GRADUATES
   Width: 16
   Height: 16
6. Design the bitmap as follows:
    
   
7. In the Resource View, right-click SchoolRenrolment2 -> Add -> Resource...
8. In the Add Resource dialog box, double-click Bitmap
9. In the Resource View, click IDB_BITMAP
10. In the Properties window, change the following characteristics:
    Filename: undergraduates.bmp
    ID: IDB_UNDERGRADUATES
    Width: 16
    Height: 16
11. Design the bitmap as follows:
     
    
12. In the Resource View, right-click SchoolRenrolment2 -> Add -> Resource...
13. In the Add Resource dialog box, double-click Bitmap
14. In the Properties window, make the following changes:
    Filename: certificates.bmp
    ID: IDB_CERTIFICATES
    Width: 16
    Height: 16
15. Design the bitmap as follows:
     
    
16. Display the form
17. Right-click the form and click View Code
18. Declare three variables as follows:
     

    private: /// <summary> /// Required designer variable. /// </summary> System::ComponentModel::Container ^components; float Graduates; float Undergraduates; float Certificates;

19. Return to the form and click an unoccupied area of its body. In the Properties window, click the Events button
20. Double-click the Paint field and implement the event as follows:
     

    System::Void Form1_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) { Bitmap ^ bmpGraduates = gcnew Bitmap(L"graduates.bmp"); TextureBrush ^ brushGraduates = gcnew TextureBrush(bmpGraduates); Bitmap ^ bmpUndergraduates = gcnew Bitmap(L"undergraduates.bmp"); TextureBrush ^ brushUndergraduates = gcnew TextureBrush(bmpUndergraduates); Bitmap ^ bmpCertificates = gcnew Bitmap(L"certificates.bmp"); TextureBrush ^ brushCertificates = gcnew TextureBrush(bmpCertificates); pbxChart->CreateGraphics()->FillPie(brushGraduates, 0.0F, 0.0F, 260.0F, 200.0F, 0.0F, Graduates); pbxChart->CreateGraphics()->FillPie(brushUndergraduates, 0.0F, 0.0F, 260.0F, 200.0F, Graduates, Undergraduates); pbxChart->CreateGraphics()->FillPie(brushCertificates, 0.0F, 0.0F, 260.0F, 200.0F, Graduates + Undergraduates, Certificates); e->Graphics->FillRectangle(brushGraduates, Rectangle(lblGraduates->Left, lblGraduates->Top + 18, btnClose->Width, 20)); e->Graphics->DrawRectangle(gcnew Pen(Color::Black), Rectangle(lblGraduates->Left-1, lblGraduates->Top + 18, btnClose->Width, 20)); e->Graphics->FillRectangle(brushUndergraduates, Rectangle(btnClose->Left, lblUndergraduates->Top + 18, btnClose->Width, 20)); e->Graphics->DrawRectangle(gcnew Pen(Color::Black), Rectangle(btnClose->Left-1, lblUndergraduates->Top + 18, btnClose->Width+1, 20)); e->Graphics->FillRectangle(brushCertificates, Rectangle(btnClose->Left, lblCertificates->Top + 18, btnClose->Width, 20)); e->Graphics->DrawRectangle(gcnew Pen(Color::Black), Rectangle(btnClose->Left-1, lblCertificates->Top + 18, btnClose->Width+1, 20)); pbxChart->CreateGraphics()->DrawPie(gcnew Pen(Color::Blue), 0.0F, 0.0F, 260.0F, 200.0F, 0.0F, Graduates); pbxChart->CreateGraphics()->DrawPie(gcnew Pen(Color::Red), 0.0F, 0.0F, 260.0F, 200.0F, Graduates, Undergraduates); pbxChart->CreateGraphics()->DrawPie(gcnew Pen(Color::Green), 0.0F, 0.0F, 260.0F, 200.0F, Graduates + Undergraduates, Certificates); pbxChart->CreateGraphics()->DrawEllipse(gcnew Pen(Color::Red, 2), Rectangle(0, 0, 260, 200)); }

21. Return to the form and click the picture box
22. In the Events section of the Properties window, double-click Paint and implement its event as follows:
     

    System::Void pbxChart_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) { Invalidate(); }

23. Return to the form and double-click the Create Chart button
24. Implement the event as follows:
     

    System::Void btnCreateChart_Click(System::Object^ sender, System::EventArgs^ e) { float grad, under, cert, total; float percentGraduates, percentUndergraduates, percentCertificates; grad = float::Parse(txtGraduates->Text); under = float::Parse(txtUndergraduates->Text); cert = float::Parse(txtCertificates->Text); total = grad + under + cert; percentGraduates = (grad / total) * 100; percentUndergraduates = (under / total) * 100; percentCertificates = (cert / total) * 100; Graduates = (360 * percentGraduates) / 100; Undergraduates = (360 * percentUndergraduates) / 100; Certificates = (360 * percentCertificates) / 100; pbxChart->Invalidate(); }

25. Return to the form and double-click the Close button
26. Implement its event as follows:
     

    System::Void btnClose_Click(System::Object^ sender, System::EventArgs^ e) { Close(); }

27. Execute the application and test the form
     
     
28. After using it, close the form