[RESOLVED] Convert from C# to VC++2010 -dataGridView?

[MAHEY]

Hi,
I like to convert the following codes from c# to VC++2010. Any help for me?

Actually the codes for dataGridView - Enter Key process for cursor movement from one cell to another cell [like a tab key...]

public class MyDataGrid : DataGridView
{
protected override bool ProcessDialogKey(Keys keyData)
{
Keys key = keyData & Keys.KeyCode;
if (key == Keys.Enter)
{
base.OnKeyDown(new KeyEventArgs(keyData));
return true;
}
else
{
return base.ProcessDialogKey(keyData);
}
}
}

[ovidiucucu]

Just thinking about "translating" C# into (Visual) C++ code is a "piece of cake".
However, DataGridView Class is .NET stuff, then you cannot simply derive from it "like a walking in the park", let's say, in an MFC application.
Basically, I see two choices:

1. get rid of .NET's DataGridView and replace it with an unmanaged component, e.g. "Microsoft Data Grid" ActiveX control, or
2. make a separate .NET Class Libray project to implement the grid, then "import" it in the MFC application; not sure about this one, but may try this article as a "start digging point".

[David Anton]

As Ovidiu said, it's no picnic to convert to native C++, but if you are one of the handful of people in the world coding in C++/CLI, then you can use:

public ref class MyDataGrid : DataGridView
{
protected:
	virtual bool ProcessDialogKey(Keys ^keyData) override
	{
		Keys ^key = keyData & Keys::KeyCode;
		if (key == Keys::Enter)
		{
			DataGridView::OnKeyDown(gcnew KeyEventArgs(keyData));
			return true;
		}
		else
		{
			return DataGridView::ProcessDialogKey(keyData);
		}
	}
};

[MAHEY]

Hi David,
The above code will be declared in Header File..Then, how this can be initiated in cpp File?

Can you explain me please?

Thanks

[David Anton]

//.h file code:

public ref class MyDataGrid : DataGridView
{
protected:
	virtual bool ProcessDialogKey(Keys ^keyData) override;
};

//.cpp file code:

bool MyDataGrid::ProcessDialogKey(Keys ^keyData)
{
	Keys ^key = keyData & Keys::KeyCode;
	if (key == Keys::Enter)
	{
		DataGridView::OnKeyDown(gcnew KeyEventArgs(keyData));
		return true;
	}
	else
	{
		return DataGridView::ProcessDialogKey(keyData);
	}
}

[MAHEY]

Hi David,

I Checked...Its giving the following errors. Further is it possible to learn.....?

Errors:
01. warning C4490: 'override' : incorrect use of override specifier; 'MyDGV::ProcessDialogKey' does not match a base ref class method

02.error C3063: operator '&': all operands must have the same enumeration type

03.error C2275: 'System::Windows::Forms::Keys' : illegal use of this type as an expression

04.error C2275: 'System::Windows::Forms::Keys' : illegal use of this type as an expression

Thanks For the helps...