Managed C++/CLI

Re: Using C++.net interface in C#

22-Sep-07 8:37

Don't you want a managed C++ interface class instead?

public interface class IAnimal<br />
{...<br />
<br />

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Sandeep Datta22-Sep-07 20:23

Sandeep Datta

22-Sep-07 20:23

Thanks for pointing this out. I have used C++ and C# but I am new to C++/CLI. This works as desired.

SDX2000

vector of class instances within class itself as a data member

Thanks for all the fish21-Sep-07 21:18

Thanks for all the fish

21-Sep-07 21:18

Hi All..

I have a confusion,,,,can I declare a vector of class instances as a data member in the class itself...and can I use that vector in that class...

like..

class printer{
string Printername;
unsigned int PrinterPort;
.................
...............

vector<printer*> m_vectPrinter;

please help me Confused | :confused:

Rashmi

Re: vector of class instances within class itself as a data member

Luc Pattyn22-Sep-07 1:28

Luc Pattyn

22-Sep-07 1:28

Hi,

yes you can do such things, in C# you would do something like:

static ArrayList allPrinters1;           // all versions of .NET
static List<printer> allPrinters2;       // or generics since .NET 2.0

and there must be an equivalent in C++.

You may add initialization code:

static ArrayList allPrinters1=new ArrayList();           // all versions of .NET
static List<printer> allPrinters2=new List<printer>();   // or generics since .NET 2.0

You could add code to the constructor so it automatically adds the newly created
printer ("this") to the collection.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

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Copying control events

earlgraham20-Sep-07 12:33

earlgraham

20-Sep-07 12:33

Is there a way to copy the events associated with a control to another control?

Like this ( will give a compiler error )

this->button->click = this->otherbutton->click;

Thanks

PS this relates to my earlier post

Programmer
Glenn Earl Graham
Austin, TX

Re: Copying control events

George L. Jackson20-Sep-07 13:38

Calling a Click Event - dynamically

20-Sep-07 13:38

If button and otherbutton is set up this way:

this->button->Click += gcnew System::EventHandler(this, &Form1::button_Click);
this->otherbutton->Click += gcnew System::EventHandler(this, &Form1::otherbutton_Click);

then you can add "otherbutton" to also handle button's event thus:

this->button->Click += gcnew System::EventHandler(this, &Form1::otherbutton_Click);

"We make a living by what we get, we make a life by what we give." --Winston Churchill

earlgraham20-Sep-07 11:36

earlgraham

20-Sep-07 11:36

I have a list of control names (in String form). Not the WinForm control object but the name of the control object. I need to call the click event associated with that control. I need to do this at run time dynamically.

Is there a way to call that event?

Not this is for a Window Form running in a C++ environment.
Hope you can point me in the right direction.
Thanks

Programmer
Glenn Earl Graham
Austin, TX

Re: Calling a Click Event - dynamically

Mark Salsbery20-Sep-07 13:02

Listview horizontal scroll bar

20-Sep-07 13:02

I haven't tried this, but maybe this will help:

How to: Simulate Mouse and Keyboard Events in Code[^]

You should be able to get controls by indexing (by name) the
Controls property of the form.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

kani9819-Sep-07 13:37

kani98

19-Sep-07 13:37

I have a Listview window with 10 columns. Data are display in the column going left to right with the newest data at the right most column. A horizontal scrollbar is automatically displayed at the bottom and the thumb of the scrollbar is at the left side. I want to put the thumb of the scrollbar to the right side so the when you go to that window you see the newest data first. I tried using GetScrollInfo() but I keep on getting "The window does not have scroll bars." from GetLastError(). I tried using SetScrollInfo() and passing in different values for nPos of the SCROLLINFO structure to see if it would move the thumb, but it doesn't seem to work. Does anyone know how you I get the thumb of the scrollbar to be at the right side?

Mark Salsbery19-Sep-07 15:10

19-Sep-07 15:10

Can you use LVM_SCROLL/ListView_Scroll()[^]?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

kani9820-Sep-07 8:52

kani98

20-Sep-07 8:52

Hi Mark, thanks for the help, ListView_Scroll() solved the problem I asked. Now I have another problem, when I press the left or right arrow on the scrollbar, I don't receive any WM_HSCROLL messages. I need to check when the thumb is at the far right and the right arrow is press I need to check for newer data and when the thumb is at the far left and the left arrow is press to retrieve older data. Any suggestion why I am not receiving any WM_HSCROLL messages?

Mark Salsbery20-Sep-07 9:06

20-Sep-07 9:06

Same situation - we don't know how the common controls are implemented internally
so we can't assume these window messages are available in the standard way.

Just like you should be using ListView messages to control the control ( Smile | :)

), you should
be looking for ListView notifications (LVN_xxxx) instead of standard window messages.

See LVN_BEGINSCROLL/LVN_ENDSCROLL

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Mark Salsbery20-Sep-07 9:14

How do you populate DataGridControl cell?

20-Sep-07 9:14

FYI...

I recommend keeping a link to this:

Control Library[^]

or the equivalent link in your local development MSDN library.

It's the documentation for all the Windows common controls, including messages,
notifications, and APIs.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

BuckBrown19-Sep-07 11:52

BuckBrown

19-Sep-07 11:52

Hi, I am using Visual Studio 2005 C++/CLI. I have been trying to populate a cell in a grid control but I haven't been able to find any examples that are not C#. I thought I needed to do something like...

DataGridViewCell myCell = gcnew DataGridViewCell(rowValue, colValue);
dataGridview1->CurrentCell = myCell;
dataGridView1->CurrentCell->Value = "Test";

The compiler complains that an abstact class cannot be instantiated. If anyone knows of a link to a CLI example that would be great. I just can't quit seem to figure out how to populate the cells of the DataGridView control (the microsoft .NET documentation hasn't helped).

Thanks

Buck

George L. Jackson19-Sep-07 13:59

19-Sep-07 13:59

DataGridViewCell is an abstract class. Thus, you cannot create an instance. However, you can do the following:

// dataGridView1 has two columns: Name and Age.
// At this point dataGridView1 does not have any rows or cells

DataGridViewRow^ row = gcnew DataGridViewRow;
row->CreateCells(dataGridView1);
dataGridView1->Rows->Add(row);

dataGridView1->Rows[0]->Cells[0]->Value = "George";
dataGridView1->Rows[0]->Cells[1]->Value = "54";

"We make a living by what we get, we make a life by what we give." --Winston Churchill

Re: How do you populate DataGridControl cell? [modified]

BuckBrown20-Sep-07 9:45

BuckBrown

20-Sep-07 9:45

Hi George,

This isn't working for me too well. I keep getting array bounding errors. Your example is much like what I have seen where you start with some number of colums but no rows or cells. What I have done is pre-define the number of rows and columns like this...

dataGridView1->RowCount = 150;
dataGridView1->ColumnCount = 120;
myArray = gcnew array<celllocation^, 2="">(dataGridView1->RowCount, dataGridView1->ColumnCount);

for(int i = 0; i < dataGridView1->RowCount; i++)
for(int j = 0; j < dataGridView1->ColumnCount; j++)
{
dataGridView1->Columns[j]->Width = 8;
dataGridView1->Rows[i]->Height = 6;
}

This code will display a 120 column by 150 column grid (although it does take 10 seconds to display) which is what I want, but how do I navigate it? It would be intuitive to do something like...

dataGridView1(cell_row_value, cell_cloumn_value) = what goes into the cell

but that doesn't work. It seems I have to use the Cell->Value property but I have to set the (row, col) coordinates of the cell and I can only set the coordinates with a DataGridViewCell^ data type and I can't instantiate a DataGridViewCell^ because it's abstract. I can't figure out how to say 'Make the current cell the cell at row coordinate X and column coordinate Y'. This is what I need to know.

Thanks

Buck

George L. Jackson20-Sep-07 12:22

20-Sep-07 12:22

Buck,

In your original post, you did not give enough information to warant a specific answer to your current needs. However, see if this may work:

for (int i = 0; i < 120; ++i)
{
DataGridViewTextBoxColumn^ col =
gcnew DataGridViewTextBoxColumn;

col->Name = "col" + i.ToString();
col->HeaderText = i.ToString();

dataGridView1->Columns->Add(col);
}

for (int i = 0; i < 100; ++i)
{
DataGridViewRow^ row =
gcnew DataGridViewRow;

dataGridView1->Rows->Add(row);
}

dataGridView1->Rows[9]->Cells[4]->Value = "George";

There may be a faster way of doing this, and I will dig a little deeper. I don't do much Window Forms programming.

-- modified at 18:32 Thursday 20th September, 2007

"We make a living by what we get, we make a life by what we give." --Winston Churchill

BuckBrown20-Sep-07 9:47

BuckBrown

20-Sep-07 9:47

Hi George,

Oh by the way, when I click on the close button in the top right most corner of the form that contains the DataGridView conrol it takes the same amount of time to exit the form as it does to display it (ten seconds).

Buck

George L. Jackson20-Sep-07 13:07

Insertion of Smiley Faces in Rich Edit Control

20-Sep-07 13:07

Reading the documentation, I came up with this:

	for (int i = 0; i < 120; ++i)
	{
		DataGridViewTextBoxColumn^ col = 
			gcnew DataGridViewTextBoxColumn;
 
		col->Name = "col" + i.ToString();
		col->HeaderText = i.ToString();
 
		dataGridView1->Columns->Add(col);
	}
 
	dataGridView1->Rows->Add(100);
	dataGridView1[3, 9]->Value = "Buck"; // Column 4 - Row 10

"We make a living by what we get, we make a life by what we give." --Winston Churchill

_Shiva19-Sep-07 1:58

_Shiva

19-Sep-07 1:58

Hi All,

I want to insert smiley faces in the Rich Edit Control (like Yahoo Chat)...can anyone help me in this issue..
just tell me how to load the smiley and display it in the Rich Edit control.

Thanks in advance,
Shiva

Re: Insertion of Smiley Faces in Rich Edit Control

Giorgi Dalakishvili19-Sep-07 2:43

Giorgi Dalakishvili

19-Sep-07 2:43

If you had used google, you would have found at least two articles:
http://www.codeproject.com/cs/miscctrl/csexrichtextbox.asp
http://www.codeproject.com/cs/miscctrl/MyExtRichTextBox.asp

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How to use System::Xml namespace in an MFC application?

Rocky#18-Sep-07 18:13

Rocky#

18-Sep-07 18:13

hi,

I'm working in .NET 1.1 and I've been given an application built in MFC and I need to generate some XML log files. I wanna use the XMLtextwriter class but as far as I see it, it doesnt allow you to add a namespace suchas

using namespace System::Xml;

So what should I do?? is there some way I can use the XmlTextWriter class in an MFC application?

Thanks in advance

Rocky

You can't climb up a ladder with your hands in your pockets.

Re: How to use System::Xml namespace in an MFC application?

George L. Jackson18-Sep-07 23:46