C++ Windows Forms L05 - Controls P4 of C++ Windows Forms Light Course

1. C++.NET
Windows Forms Course
L05 -Controls Part 4
Mohammad Shaker
mohammadshakergtr.wordpress.com
C++.NET Windows Forms Course
@ZGTRShaker

3. Focus Method

4. Focus Method
• What will happen now?
private: System::Void button1_Click_3(System::Object^
System::EventArgs^ e)
{
textBox2->Focus() ;
}
sender,

5. Focus Method
Before clicking button1
After clicking button1

6. Focus Method
• We sometimes use the following
private: System::Void button1_Click_3(System::Object^
System::EventArgs^ e)
{
if (textBox2->CanFocus == true )
{
textBox2->Focus() ;
}
}
sender,
• Why? And what will happen?
Cause some controlls don’t have the Focus method as one of
their members

7. Focus Method
Before clicking button1
After clicking button1

8. Focus Method
• The Windows Forms controls in the following list are not
selectable. Controls derived from these controls are also
not selectable.
• Panel
• GroupBox
• PictureBox
• ProgressBar
• Splitter
• Label
• LinkLabel (when there is no link present in the control)

9. Focus Method
public: void ControlSetFocus(Control^ control)
{
// Set focus to the control, if it can receive focus.
if (control->CanFocus)
control->Focus();
}

10. DataGridVeiw

11. DataGridVeiw
• Matrix
• DataBase
• DataBind (DataSource)

12. DataGridVeiw

13. DataGridVeiw
• Dock in parent container

14. DataGridVeiw

15. DataGridVeiw

16. DataGridVeiw

19. DataGridVeiw
private: System::Void button1_Click_1(System::Object^
System::EventArgs^ e)
{
dataGridView1[0,0]->Value = 3;
}
sender,

20. DataGridVeiw
• Is it the same with columns? No need to!
private: System::Void button1_Click_1(System::Object^ sender,
System::EventArgs^ e)
{
textBox1->Text=dataGridView1->Rows[0]->Cells[1]->Value-> ToString();
}

21. DataGridVeiw

22. StatusBar

23. StatusBar

24. StatusBar

25. StatusBar

26. StatusBar

27. StatusBar
• Can add more than one!

31. StatusBar
• Let’s have the following …

32. StatusBar
private: System::Void button1_Click_5(System::Object^ sender,
System::EventArgs^ e)
{
toolStripStatusLabel1->Text = "You are clicking the button and you
seem hungy:D";
}

33. StatusBar
Before clicking button1
After clicking button1

34. StatusBar
• What will happen now?
private: System::Void Form1_MouseMove(System::Object^
System::Windows::Forms::MouseEventArgs^ e)
{
toolStripProgressBar1->PerformStep();
}
sender,

39. MenuStrip

40. MenuStrip - Runtime
Has Events Like any
other

42. Timer

44. Timer

45. Timer
• Consider this:
private: System::Void button1_Click(System::Object^
System::EventArgs^ e)
{
timer1->enabled = true;
}
sender,
• What should happen now?
private: System::Void timer1_Tick(System::Object^
System::EventArgs^ e)
{
progressBar1->PerformStep();
}
sender,

46. Timer
• Before clicking the “start” button

47. Timer
• After clicking the “start” button

48. Quick App

49. OpenFileDialog

50. OpenFileDialog
private: System::Void button1_Click(System::Object^
System::EventArgs^ e)
{
openFileDialog1->ShowDialog();
}
sender,

52. OpenFileDialog

53. OpenFileDialog
• Note that openFileDialog won’t open any file! Just a dialog!
private: System::Void button1_Click(System::Object^ sender,
System::EventArgs^ e)
{
if (openFileDialog1->ShowDialog()==(System::Windows::Forms::DialogResult::OK))
{
textBox1->Text = openFileDialog1->FileName ;
}
}

54. OpenFileDialog
private: System::Void button1_Click(System::Object^ sender,
System::EventArgs^ e)
{
if(
openFileDialog1->ShowDialog()==(System::Windows::Forms::DialogResult::OK))
{
textBox1->Text = openFileDialog1->FileName ;
openFileDialog1->ShowReadOnly = true ;
}
}

55. OpenFileDialog

56. OpenFileDialog - Filters
• text files (*.txt) |*.txt
• All files (*.*) | *.*

57. OpenFileDialog - Folders
// If a file is not opened then set the initial directory to the
// FolderBrowserDialog::SelectedPath value.
if ( !fileOpened )
{
openFileDialog1->InitialDirectory = folderBrowserDialog1->SelectedPath;
openFileDialog1->FileName = nullptr;
}

59. SaveFileDialog

60. OpenFileDialog
using namespace System::IO;
private:
void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
Stream^ myStream;
OpenFileDialog^ openFileDialog1 = gcnew OpenFileDialog;
openFileDialog1->InitialDirectory = "c:";
openFileDialog1->Filter = "txt files (*.txt)|*.txt|All files
(*.*)|*.*";
openFileDialog1->FilterIndex = 2;
openFileDialog1->RestoreDirectory = true;
if ( openFileDialog1->ShowDialog() ==
System::Windows::Forms::DialogResult::OK )
{
if ( (myStream = openFileDialog1->OpenFile())!= nullptr )
{
// Insert code to read the stream here.
myStream->Close();
}
}
}

63. SaveFileDialog
using namespace System::IO;
private:
void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
{
Stream^ myStream;
SaveFileDialog^ saveFileDialog1 = gcnew SaveFileDialog;
saveFileDialog1->Filter = "txt files (*.txt)|*.txt|All files
(*.*)|*.*";
saveFileDialog1->FilterIndex = 2;
saveFileDialog1->RestoreDirectory = true;
if ( saveFileDialog1->ShowDialog() ==
System::Windows::Forms::DialogResult::OK)
{
if ( (myStream = saveFileDialog1->OpenFile())!= nullptr)
{
// Code to write the stream goes here.
myStream->Close();
}
}
}

65. That’s it for today!