C / C++ / MFC

How to Call C# DLL in VC++ win32?

24-Feb-11 2:57

si_69 wrote:
I have an application where a user types a message into an edit control, after they have exceeded a certain number of characters they are shown a warning. ie AfxMessageBox("you have exceeded X number of characters");

This sounds messy. Why not just send the edit control a EM_LIMITTEXT message?

si_69 wrote:
it seems that if the user is typing fast by pressing return of the space bar this is calling the OnOK and quickly turning off the message box so the users are not seeing the warning.

You should initially disable the OK button and only enable it if all of the criteria have been met.

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mathivanaan24-Feb-11 0:35

mathivanaan

24-Feb-11 0:35

I am working in (Windows Presentation Foundation)WPF with C# environment.
I have created simple DLL for C# with WPF.

but how to call C# DLL from VC++ win32?.

Following code of DLL:

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Test
{
    /// <summary>
    /// Interaction logic for UserControl1.xaml
    /// </summary>
    public partial class UserControl1 : UserControl
    {
        public UserControl1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, RoutedEventArgs e)
        {
            textBox1.Text = "Welcome to Tessolve";
        }
    }
}

Actually how to call C# dll function in Vc++ environment?

Please share ur ideas or urls

Regards,
M.Mathivanan

Re: How to Call C# DLL in VC++ win32?

Richard MacCutchan24-Feb-11 0:52

Richard MacCutchan

24-Feb-11 0:52

There is an option to expose C# classes/methods to COM, so you would access them from C++ in that way. Take a look at some of the articles here on CodeProject: try a search for "C# COM".

I must get a clever new signature for 2011.

Re: How to Call C# DLL in VC++ win32?

Cool_Dev24-Feb-11 1:15

Cool_Dev

24-Feb-11 1:15

msdn page for what is told above http://msdn.microsoft.com/en-us/library/zsfww439%28vs.71%29.aspx[^]

Re: How to Call C# DLL in VC++ win32?

Bernhard Hiller24-Feb-11 4:07

Bernhard Hiller

24-Feb-11 4:07

There is another trick. mscorlib.dll itself is also a COM dll, i.e. you can instantiate a COM object with that. And then you can load your .NET dll via that object. I do not remember all the details, I guess following article could help you:
Creating a host application for the .NET Common Language Runtime.[^]

Re: How to Call C# DLL in VC++ win32? [modified]

Rolf Kristensen24-Feb-11 10:09

Rolf Kristensen

24-Feb-11 10:09

One simple solution is to create a CLI/Interop DLL compiled with /clr, this DLL can export standard C function, which the C++ code can call.

When implementing the standard C functions in the CLI/Interop DLL , then one is able to call standard .NET code, and it is possible for the CLI/Interop DLL to have references to other standard .NET assemblies.

This example hosts a WinForms control in a MFC application, but one could just aswell host a WPF control:

WinFormIntegration Sample: Demonstrates Hosting a WinForms User Control in an MFC Application [^]

modified on Friday, February 25, 2011 10:47 AM

how to change quick launch shortcut and start menu shortcut path?

yogish29323-Feb-11 22:51

yogish293

23-Feb-11 22:51

i want to change quick launch path and start menu shortcut path for existing shortcuts.... also rollback to original path..

Re: how to change quick launch shortcut and start menu shortcut path?

Richard MacCutchan23-Feb-11 22:54

Richard MacCutchan

23-Feb-11 22:54

Is this a C++ question?

I must get a clever new signature for 2011.

Re: how to change quick launch shortcut and start menu shortcut path?

Hans Dietrich23-Feb-11 23:07

Hans Dietrich

23-Feb-11 23:07

There are some articles on CodeProject that will help you get started: here, here, and here.

Best wishes,
Hans

[Hans Dietrich Software]

Dynamically adding Menu in Mainframe menu

Anu_Bala23-Feb-11 22:35

23-Feb-11 22:35

In my application initailly i set menu in resource file as

File Display Help Exit

Like this i added first main menu.But dynamically i want to add submenus for Display and Exit.
Under Display,four of five menus should be display.I will add this dynamically by reading it from seperate file.
I tried InsertMenu,Append Menu
but nothing happens.
Pls help me..

Anu

Richard MacCutchan23-Feb-11 22:53

Richard MacCutchan

23-Feb-11 22:53

Anu_Bala wrote:
I tried InsertMenu,Append Menu
but nothing happens.

Then you must be doing something wrong, but we cannot guess what happens in your code without seeing some of it.

I must get a clever new signature for 2011.

Anu_Bala23-Feb-11 23:15

23-Feb-11 23:15

Actually i tried

CMenu *pMenuBar = this->GetMenu();
	ASSERT_VALID(pMenuBar);
	CMenu *pSubMenu = pMenuBar->GetSubMenu(0); 

	pSubMenu->AppendMenu(MF_STRING | MF_ENABLED, ID_COMMAND_1, "First Item");
	pSubMenu->AppendMenu(MF_STRING | MF_ENABLED, ID_COMMAND_2, "Second Item");

By this i can add.but in the mainmenu already one Exit submenu is there.But i dont want that.
So i deleted that sub menu in resource file itself.And when i gave this code it shows assert error.
If i didnot delete Exit menu ,then after running application my FILE menu shows

FILE
Exit   //Actually i dont want this
FirstItem
Second Item

Anu

David Crow24-Feb-11 3:00

24-Feb-11 3:00

Anu_Bala wrote:
Exit //Actually i dont want this

So can you not just remove it from the .rc file?

Anu_Bala24-Feb-11 19:58

24-Feb-11 19:58

If i remove this Exit from .RC menu editor.When im runnong application it shows Unhandled Exception error.
So what i did,i coded like

pSubMenu->RemoveMenu(0, MF_BYPOSITION);

This will remove the Exit dynamically and then i added my menu by

pSubMenu->AppendMenu(MF_STRING | MF_ENABLED, ID_COMMAND_1, "First Item");
pSubMenu->AppendMenu(MF_STRING | MF_ENABLED, ID_COMMAND_2, "Second Item");

Now i want to rename the main menu text dynamically.
I dont know how can i do that?

Anu

David Crow25-Feb-11 2:10

25-Feb-11 2:10

Anu_Bala wrote:
If i remove this Exit from .RC menu editor.When im runnong application it shows Unhandled Exception error.

And that doesn't concern you?

Anu_Bala wrote:
pSubMenu->RemoveMenu(0, MF_BYPOSITION);This will remove the Exit dynamically...

Employing a "band-aid" fix is not the right answer.

Anu_Bala wrote:
Now i want to rename the main menu text dynamically.
I dont know how can i do that?

How about ModifyMenu()?

Hans Dietrich23-Feb-11 22:59

Hans Dietrich

23-Feb-11 22:59

You can override OnInitMenuPopup() and insert and remove menu items there.

What is happening is that your menu template (in the .rc file) is being loaded automatically. Until it is loaded, trying to insert or append will have no effect. OnInitMenuPopup() gives you a chance to modify the menu before it is displayed.

Best wishes,
Hans

[Hans Dietrich Software]

David Crow24-Feb-11 3:02

24-Feb-11 3:02

Anu_Bala wrote:
I tried InsertMenu,Append Menu
but nothing happens.

What do those two functions return? Have you tried calling ::InsertMenu() or ::AppendMenu() instead?

how to hide the vertical scrollbar of listbox

Roger Allen3-Mar-11 1:48

Roger Allen

3-Mar-11 1:48

If the menu is already selected into the mainframe at time of modification, you need to call DrawMenuBar() after updating it for changes to take effect (be shown)

If you vote me down, my score will only get lower

raj157623-Feb-11 21:45

raj1576

23-Feb-11 21:45

There is a requirement to hide the vertical scrollbar of listbox .

how to hide the vertical scrollbar of listbox

raj157623-Feb-11 20:38

raj1576

23-Feb-11 20:38

There is a requirement to hide the vertical scrollbar of listbox when items exceed the display area. There is no option to hide vertical scrollbar but there is a option for to hide horizontal scroolbar.

Re: how to hide the vertical scrollbar of listbox

Cool_Dev23-Feb-11 21:27

Cool_Dev

23-Feb-11 21:27

Can't you remove the 'Verical scroll' style from the list box property, or remove WS_VSCROLL window style?

CPtrList AddTail problem [SOLVED]

Anu_Bala23-Feb-11 17:42

Re: CPtrList AddTail problem

23-Feb-11 17:42

Hi im haveing CPtrList and im adding this list by gettign data from xlsheet.What happened after adding details to list,the list having the same last data.suppose the list count is 3,then 3 listitems are same data.Here the code

CPtrList GrPageList;
void CGraphConfig::OnImportgraph()
{
CString TempString,TempInfo,sExt;		
	int PointCount=0,iRow=0;
	CString sFileName = _T("");

	SGrPgConf *pDetl = new SGrPgConf;
	if(pDetl == NULL)
	{
		AfxMessageBox("Memory Allocation Failure ");
		return;
	}
	GrPageList.RemoveAll();	

	CFileDialog oFileOpen(1,"xls",0,0,"MicroSoft Excel Files(*.xls)|*.xls|Tag Detail Grid File(*.tdl)|*.tdl||");//Open Mode
	oFileOpen.m_ofn.lpstrTitle="Import From...";
	if(oFileOpen.DoModal() == IDOK)	
		sFileName=oFileOpen.GetPathName();		
	
	sExt=sFileName.Right(3);
	sExt.MakeLower();

	if(!strcmp(sExt,"xls"))
	{		
		CExcelSheet TagDet(sFileName,"Sheet1",FALSE); 
		
		for(iRow=2;iRow <= TagDet.GetTotalRows();iRow++)
		{
			
			TagDet.ReadCell(TempString,1,iRow);				
			pDetl->iPageNo = atoi(TempString);			
		
			TagDet.ReadCell(TempString,2,iRow);			
			sprintf(pDetl->sPageTitle ,"%s",TempString);

			TagDet.ReadCell(TempString,3,iRow);			
			sprintf(pDetl->sPanelDetail[0] ,"%s",TempString);	

			TagDet.ReadCell(TempString,4,iRow);			
			sprintf(pDetl->sPanelDetail[1] ,"%s",TempString);

                        GrPageList.AddTail(pDetl);	

			
			/////////  Check the List
			POSITION hPos = GrPageList.GetHeadPosition();
			while(hPos)
			{
			SGrPgConf *pData = (SGrPgConf *)GrPageList.GetAt(hPos);  //When I check here			
			GrPageList.GetNext(hPos);
			}					
		}		
		TagDet.Commit();					
	}
}

When i check the list the pData shows the same data(last row - pageno-3.0) three times,GrPageList count is 3.
My XLSheet shows like
PageNo PageTitle FirstKey SecKey
1.0 graph1 Group01 Group02
2.0 graph2 TREND01 TREND02
3.0 graph3 Group01 Group02

Pls help me..

Anu

modified on Thursday, February 24, 2011 1:17 AM

Cool_Dev23-Feb-11 18:11

Cool_Dev

23-Feb-11 18:11

you are updating the value at the same pointer and adding the same pointer to the CPtrList every time. So all the entries point to same data.
Do SGrPgConf *pDetl = new SGrPgConf; inside the for loop. Remember to delete all entries in list when they are no longer needed.

for(iRow=2;iRow <= TagDet.GetTotalRows();iRow++)
{
    // New SGrPgConf.
    SGrPgConf *pDetl = new SGrPgConf;
			
    TagDet.ReadCell(TempString,1,iRow);				
    pDetl->iPageNo = atoi(TempString);			
		
    // Other codes here..

    GrPageList.AddTail(pDetl);	

    //....
}

Re: CPtrList AddTail problem

Anu_Bala23-Feb-11 19:17