ATL / WTL / STL

13-Mar-17 1:04

Hi everyone!
I need to "send" data in a notepad every time I write double numbers on edit control and press save. I wrote some code but my dialog (where the edit control is) don't even open when I run the executable. What I've done so far:

void CDataDialog::OnBnClickedSave()
{
	// TODO: Add your control notification handler code here
	CFileDialog dlg(FALSE, L"Text Files (*.txt)|*.txt|Texr Files (*.h)|*.h|", NULL, OFN_OVERWRITEPROMPT, L"Text Files (*.txt)|*.txt|Text Files (*.h)|*.h|");

	CStdioFile file;

	CString buffer;
	CString textfile;

	if (dlg.DoModal() == IDOK)
	{
		file.Open(dlg.GetFileName(), CStdioFile::modeCreate | CStdioFile::modeWrite);
		dlg.GetFileName();

		file.WriteString(buffer);

		file.Close();
	}

}

void CDataDialog::OnEnChangeEdit1()
{
	// TODO:  If this is a RICHEDIT control, the control will not
	// send this notification unless you override the CDialog::OnInitDialog()
	// function and call CRichEditCtrl().SetEventMask()
	// with the ENM_CHANGE flag ORed into the mask.

	// TODO:  Add your control notification handler code here
	UpdateData(TRUE);
}

I think I must write some code here so the dialog box work fine but I can't it.

void CInputView::OnLinefeaturesData()
{
	// TODO: Add your command handler code here
	CInputDoc* pDoc = GetDocument();
	CDataDialog DialogWindow;
}

Jochen Arndt13-Mar-17 2:24

Jochen Arndt

13-Mar-17 2:24

You have to show the dialog after it has been created:

void CInputView::OnLinefeaturesData()
{
    // TODO: Add your command handler code here
    CInputDoc* pDoc = GetDocument();
    CDataDialog DialogWindow;
    // Now show the dialog
    DialogWindow.DoModal();
}

lolici13-Mar-17 2:42

13-Mar-17 2:42

Great!!!I did it!! but how can I save what I write on edit box in a .txt. It worked fine but I din't manage to save what I wrote! Thanks again for your response!! Smile | :)

Jochen Arndt13-Mar-17 2:53

Jochen Arndt

13-Mar-17 2:53

Just get the text from the edit box using GetWindowText:

C++

CString buffer;
// If you have a class member variable for the CEdit in your CDataDialog class:
m_editBox.GetWindowText(Buffer);
// If not, you have to use the ID:
CEdit *pEdit = (CEdit*)GetDlgItem(IDC_OF_THE_EDIT_BOX);
pEdit->GetWindowText(buffer);

lolici13-Mar-17 3:15

13-Mar-17 3:15

I did it but I didn't manage to save them again. Also when I pressed <x> this message appeared: "Exception thrown at 0x104420C5 (mfc140ud.dll) in Input.exe: 0xC0000005: Access violation reading location 0x00000020.

If there is a handler for this exception, the program may be safely continued.------>Break, Continue, Ignore"

lolici13-Mar-17 3:29

13-Mar-17 3:29

Actually, I fixed the second problem!! But still didn't saved in txt.

Jochen Arndt13-Mar-17 3:47

Jochen Arndt

13-Mar-17 3:47

Then use the debugger to see what happens (e.g. by setting a break point somewhere after the output file has been selected using the CFileDialog). You might also check if file.Open was successful. But if that fails calling file.WriteString should throw an execption.

lolici13-Mar-17 4:07

How to give data dynamically in a dialog box using visual c++

13-Mar-17 4:07

I'll check it!Thank you very mush for your help!! Smile | :)

lolici9-Mar-17 3:14

Re: How to give data dynamically in a dialog box using visual c++

9-Mar-17 3:14

Hi all,
How can I give data in a dialog box dynamically? In a previous project I used edit boxes (e.g for 3 conductors) and gave those data separately for each conductor but now I have to give them dynamically and I don't have standard number of conductors and I can't use edit box again. Could you please give me an idea or a good link describing step by step how to create a table in a dialog box dynamically?
Thanks for your time!!

Richard MacCutchan9-Mar-17 5:22

Re: How to give data dynamically in a dialog box using visual c++

9-Mar-17 5:22

Use a List Box (Windows)[^].

lolici9-Mar-17 5:51

Re: How to give data dynamically in a dialog box using visual c++

9-Mar-17 5:51

Thanks for your answer! Smile | :)

Actually a want to edit the data. I think list box is for displaying data.. :/

Richard MacCutchan9-Mar-17 6:07

Re: How to give data dynamically in a dialog box using visual c++

9-Mar-17 6:07

lolici wrote:
Actually a want to edit the data.

Pity you did not make that clear in your question.

So what exactly are you trying to achieve with this dialog? Please edit your question and add some proper detail, if possible with some code showing where the problem is.

lolici9-Mar-17 6:54

Re: How to give data dynamically in a dialog box using visual c++

9-Mar-17 6:54

I have created a dialog box in which I insert data about conductors (resistivity, permeability, diameter etc (electric power systems Smile | :)

)) in edit boxes but I have done it only for 3 conductors. I have to insert-edit the number of conductors and then edit their characteristics. But I can't use again edit boxes because this is static. I want something like a dynamic table which will have rows=number of conductors and columns about is characteristic (resistivity, permeability, diameter)and edit them in dialog box. I don't know how to upload my executable to male clear what I have done but here is a part of my code for the static case of three conductors Smile | :)

I want another dynamic way to edit data :/

C++

void CInputView::OnLinefeaturesFeatures()
{
	// TODO: Add your command handler code here
	CInputDoc* pDoc = GetDocument();
	CFeaturesDialog DialogWindow;
	DialogWindow.m_DialogCon = m_NumCond;
	DialogWindow.m_DialogLayers = m_Layers;
	DialogWindow.m_DialogPermeability = m_AirPermeability;
	DialogWindow.m_DialogAirConductivity = m_AirConductivity;
	DialogWindow.m_DialogAirPermittivity = m_AirPermittivity;
	DialogWindow.m_DialogEarthPermeability1 = m_EarthPermeability1;
	DialogWindow.m_DialogEarthConductivity1 = m_EarthConductivity1;
	DialogWindow.m_DialogEarthPermittivity1 = m_EarthPermittivity;
	DialogWindow.m_DialogDepth = m_depth;
	DialogWindow.m_DialogEarthPermeability2 = m_EarthPermeability2;
	DialogWindow.m_DialogEarthConductivity2 = m_EarthConductivity2;
	DialogWindow.m_DialogEarthPermittivity2 = m_EarthPermittivity2;
	DialogWindow.m_Dialogfrequency = m_frequency;
	if (DialogWindow.DoModal() == IDOK)
	{
		m_NumCond = DialogWindow.m_DialogCon;
		m_Layers = DialogWindow.m_DialogLayers;
		m_AirPermeability = DialogWindow.m_DialogPermeability;
		m_AirConductivity = DialogWindow.m_DialogAirConductivity;
		m_AirPermittivity = DialogWindow.m_DialogAirPermittivity;
		m_EarthPermeability1 = DialogWindow.m_DialogEarthPermeability1;
		m_EarthConductivity1 = DialogWindow.m_DialogEarthConductivity1;
		m_EarthPermittivity = DialogWindow.m_DialogEarthPermittivity1;
		m_depth = DialogWindow.m_DialogDepth;
		m_EarthPermeability2 = DialogWindow.m_DialogEarthPermeability2;
		m_EarthConductivity2 = DialogWindow.m_DialogEarthConductivity2;
		m_EarthPermittivity2 = DialogWindow.m_DialogEarthPermittivity2;
		m_frequency = DialogWindow.m_Dialogfrequency;
	}
	


}

Richard MacCutchan9-Mar-17 8:23

Re: How to give data dynamically in a dialog box using visual c++

9-Mar-17 8:23

A dialog does not seem the optimum choice for this. I would suggest switching to a CListView which allows much greater flexibility.

lolici10-Mar-17 4:29

Re: How to give data dynamically in a dialog box using visual c++

10-Mar-17 4:29

Can I edit data in a list view? Could you give me an example please or propose me a good tutorial for this case? cause I am new in programming.. :/

Richard MacCutchan10-Mar-17 4:38

Re: How to give data dynamically in a dialog box using visual c++

10-Mar-17 4:38

See CListView Class[^], CListView Search[^], etc.

ThatsAlok11-May-17 20:51

ThatsAlok

11-May-17 20:51

lolici wrote:
Can I edit data in a list view?

Off course you can, advantage of using List View over Listbox is that you can create columns and ability of in place editing. Here is one such article ListCtrl Operations[^]

STL std::string help needed

VISWESWARAN19988-Feb-17 7:02

VISWESWARAN1998

8-Feb-17 7:02

Good Morning Sir,
can we use std::string for handling names like chinese letters, japanese letters? I mean we can use them for string comparison like "some chinese stuff"=="some chinese stuff" will it work?? Thank you sir for your time excuse my english

Richard MacCutchan8-Feb-17 22:09

8-Feb-17 22:09

You would need to use std::wstring[^] which handles Unicode characters.

VISWESWARAN19989-Feb-17 3:59

VISWESWARAN1998

9-Feb-17 3:59

so sir, using wide strings are the only way? some libraries takes character arrays as their arguments so can we convert these chinese fonts to character array as char* and pass as the arguments? Confused | :confused:

Richard MacCutchan9-Feb-17 5:24

9-Feb-17 5:24

It depends what encoding you use for the Chinese characters. If it is Unicode then you need wstring, but if it's UTF8 then you will need to create a new type based on basic_string. Look at the samples in the link I gave you.