C / C++ / MFC

9-May-02 9:23

In this piece of code I expect a CRichEditCtrl to clear itself. It works fine in Win98, in XP nothing happens.

UpdateData(TRUE);
m_profileCtrl.UpdateData(TRUE);
m_profile.Empty();
m_profile.Delete(0,m_profile.GetLength());
m_profile = _T("");
m_profileCtrl.UpdateData(FALSE);
UpdateData(FALSE);

Of course this piece of code is a bit overkill, yet it should work. Smile | :)

Am I making some sort of stupid mistake, or can I safely blame XP?

Also, is there another way to clear a text box properly?

Cheers!

Joaquín M López Muñoz9-May-02 9:45

9-May-02 9:45

Try adding an UpdateWindow call at the end (though I thought it should work without it.)

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

generic_user_id9-May-02 9:41

9-May-02 9:41

I found it!

You'll NEVER believe it, but the ONLY way to make it work was by setting the text to a space _T(" ");

Unbelievable!

Thanks for your quick answer though!

Joaquín M López Muñoz9-May-02 9:50

9-May-02 9:50

Hmmm... this does seem like a bug to me. Maybe someone else here can enlighten us.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

generic_user_id9-May-02 11:09

9-May-02 11:09

It was very odd, and frustrating, as I don't have XP myself. So I kept sending patches, but they didn't work Smile | :)

- Griffith

James R. Twine10-May-02 10:30

James R. Twine

10-May-02 10:30

Just a hunch; try it without misusing the CString object:

<br />
    CRichEditCtrl::SetWindowText( _T( "" ) );<br />

Peace!

-=- James.
"Fat people are hard to kidnap."
(Try Check Favorites Sometime!)

generic_user_id13-May-02 3:47

13-May-02 3:47

That was about the first thing that came to mind with me, and much to my surprise that didn't work.

Especially because the CRichEditCtrl::Clear(); fuction refused to work too.

CStatusBar: Status Bar refresh problem

James R. Twine13-May-02 5:25

James R. Twine

13-May-02 5:25

Then that sounds like either (1) a serious bug in the RE Control, or (2) a redraw problem.

Peace!

-=- James.
"Fat people are hard to kidnap."
(Try Check Favorites Sometime!)

9-May-02 9:24

I have am having a problem with my status bars. I have 2 and the first one has 2 panes (don't know if that makes a difference). The problem occurs when I resize when my main window is not maximized and I use the grippers to resize the status bars...When I do this, the status bar does not refresh properly...It keeps drawing the new size on top of the old one. I don't know what I am doing wrong.

Here is some of my code:

static UINT indicators1[] =
{
ID_SEPARATOR, // status line indicator
ID_INDICATOR_CAPS,
ID_INDICATOR_NUM,
ID_INDICATOR_SCRL,
};

static UINT indicators2[] =
{
ID_SEPARATOR, // first message line pane left
ID_SEPARATOR, // first message line pane right
};

CMainFrame::OnCreate
--------------------
// Create Status Bar1
if (!m_wndStatusBar1.Create(this) ||!m_wndStatusBar1.SetIndicators(indicators1,sizeof(indicators1)/sizeof(UINT)))
{
TRACE0("Failed to create status bar\n");
return -1;
}

// Create Status Bar2
if (!m_wndStatusBar2.Create(this, WS_CHILD|WS_VISIBLE|CBRS_BOTTOM, ID_RESULT_STATUS_BAR) ||
!m_wndStatusBar2.SetIndicators(indicators2,sizeof(indicators2)/sizeof(UINT)))
{
TRACE0("Failed to create status bar\n");
return -1; // fail to create
}

// Set up Status bar styles
m_wndStatusBar1.SetPaneInfo(0,0,SBPS_STRETCH|SBPS_NORMAL,0);
m_wndStatusBar2.SetPaneStyle(1,SBPS_NOBORDERS);

CMainFrame::OnSize
------------------

// Resize the Status Bars
if (m_wndStatusBar2)
{
CRect rect;
m_wndStatusBar2.GetWindowRect(&rect);
m_wndStatusBar2.SetPaneStyle(1,SBPS_NOBORDERS);
m_wndStatusBar2.SetPaneInfo(1, 0,SBPS_NOBORDERS, rect.Width()/2);
}

ANY HELP WOULD BE MUCH APPRECIATED!

Thanks in advance!

Rose | [Rose]

Mandy

[akashorty.net]

Open with dialog

User 98859-May-02 9:18

User 9885

9-May-02 9:18

I was doing a ShellExecute and expected a non-associated file to bring up the "Open with" dialog. It does not. How can I bring up the open with dialog in a C++/MFC program?

Thomas

modified 29-Aug-18 21:01pm.

Re: Open with dialog

Dan Madden9-May-02 9:15

Dan Madden

9-May-02 9:15

Use CFileDialog...

Regards,

Dan

Re: Open with dialog

Joaquín M López Muñoz9-May-02 9:23

ERROR: (COM) when compiling with MIDL...

9-May-02 9:23

Here someone bothered to write the full solution.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

9-May-02 9:10

Hi All,

I have a dll that works great in VB/ASP, but when I created an .idl file, I get an error when compiling:

.\test.idl(31) : error MIDL2025 : syntax error : expecting a type specification near "<"
.\test.idl(31) : error MIDL2026 : cannot recover from earlier syntax errors; aborting compilation

below is where it is happening:

NOTE: On the following line, I had to put quotes in the code so you could see the code because it looked like a TAG in HTML...("<"GetRefTypeInfo failed">"**)

HRESULT GetItem([in, out] VARIANT* Server,
[in, out] VARIANT* Category,
[in, out] VARIANT* CType,
[out, retval] ("<"GetRefTypeInfo failed">"** );

The idl file was generated by OLE View (cut/paste) to test.idl and compiled with "C:>MIDL test.idl /h test.h"

Can anyone tell me why this is giving this error

Confused | :confused:

Regards,

Dan

Re: ERROR: (COM) when compiling with MIDL...

Vivek Rajan10-May-02 10:35

Vivek Rajan

10-May-02 10:35

HRESULT GetItem([in, out] VARIANT* Server,
[in, out] VARIANT* Category,
[in, out] VARIANT* CType,
[out, retval] ("<"GetRefTypeInfo failed">"** );

It looks like OLE View was not successful.
<GetRefTypeInfo failed> is invalid in IDL.
What is the type of the returned parameter ?
You can manually fix it in the IDL file & then retry.

V

Re: ERROR: (COM) when compiling with MIDL...

Dan Madden11-May-02 10:19

Dan Madden

11-May-02 10:19

Hi Vivek, thanks for the reply! Ok, if this is because of failure, then I will set the value in the IDL myself. It should be an "ADO Recordset" it is returning...It compiled ok now...I added the below to the IDL:

importlib("C:\Program Files\Common Files\System\ADO\MSADO15.DLL");

HRESULT SearchTickets(
[in, out] VARIANT* rsGotSchema,
[in, out] VARIANT* Criteria,
[in, out] VARIANT* ServerName,
[out, retval] _Recordset **ptrRs );

Ok done and I get it compiled, but when ran it errors here (see below):

// param #1: a passed recordset (checked before OK...)
// param #2: Query for the new recordset
// param #3: Server name
// param #4: the recorset to be filled

_RecordsetPtr pRsTickets;

hr = pRsTickets.CreateInstance(__uuidof (Recordset));
if(SUCCEEDED(hr))
{
hr = IQUIZ->SearchTickets(
(VARIANT*)&pRsSchema,
COleVariant("Some query..."),
COleVariant("Server..."),
(_Recordset**) &pRsTickets);

// *****************************************************
// When here, both recordsets have been set to NULL????
// *****************************************************
}

Output from DOS...

BEFORE CreateInstance()...pRsTickets: 0
AFTER CreateInstance()...pRsTickets: 1
BEFORE SearchTickets()...pRsSchema: 1
SearchTickets Failed (hr): -2146827864
AFTER SearchTickets()...pRsTickets: 0
AFTER SearchTickets()...pRsSchema: 0
Release OK...

This is where it blows-up (C:\...VC98\include\COMIP.H):

// Returns the address of the interface pointer contained in this
// class. This is useful when using the COM/OLE interfaces to create
// this interface.
//
Interface** operator&() throw()
{
_Release();
m_pInterface = NULL;
return &m_pInterface;
}

Can you (or anyone) help????

Regards,

Dan

Error in OOP call

pjb7899-May-02 8:57

pjb789

9-May-02 8:57

For some reason no matter what I do I keep getting an error compiling only on the 'found' routine. I can't figure out why. I have tried everything that I can think of to get around it. If anyone could give me a hand it would be great!

Thanks !!!

______________________________________________________________________________
#include <stdafx.h>

#include <stdio.h>

#include <iostream>

#include <iomanip>

#include <string>

using namespace std;

int i = 0;

static int grade_ctrA,
grade_ctrB,
grade_ctrC,
grade_ctrD,
grade_ctrF,
avg_grade,
student_ctr = 0;

class grades
{

char firstname[15];
char lastname[15];
long int ssn;
int marks;
char grade;

public:

void input(grades std[])
{
long int issn;
int ctr;
ctr = i;
cout << "Enter the Students First Name :";
cin >> std[ctr].firstname;
cout << endl;
cout << "Enter the Students Last Name :";
cin >> std[ctr].lastname;
cout << endl;
cout << "Enter the Students SSN :";
cin >> std[ctr].ssn;
std[ctr].grade = ' ';
issn = ssn;
found( grades std[ctr] ,issn );
cout << endl;
cout << "Enter the Students Mark :";
cin >> std[ctr].marks;
cout << endl;
}

void Grade(grades std[])
{

if ((std[i].marks >= 90) && (std[i].marks <= 100))
{
std[i].grade = 'A';
}
else if (std[i].marks >= 80)
{
std[i].grade = 'B';
}
else if (std[i].marks >= 70)
{
std[i].grade = 'C';
}
else if (std[i].marks >= 60)
{
std[i].grade = 'D';
}
else
std[i].grade = 'F';
}

void display()
{
cout << setw(15) << firstname << " " << setw(15) << lastname << " "
<< setw(15) << ssn << " " << setw(1) << marks << " "
<< setw(1) << grade << endl;
}

bool found(grades std[] ,long int ssn)
{
int index;
index = i;
int flag = 0;

cout << "SSN passed to Found routine is " << ssn;

do
{
if ((ssn == std[index].ssn) && (index != i))
{
cout << "Duplicate ssn entered, please re-enter";
cin >> std[i].ssn;
return true;
flag = 1;
}
else
{
return false;
flag = 0;
}
index++;
}
while((index <= 15) || (flag == 0));

cout << "Found output is " << flag << endl;
}
}; // End of Class Student

void main()
{
int j = 0;

grades std[4];

do
{
std[j].input(std);
std[j].Grade(std);
i++;
}
while(j <= 3);

for (int k=0; k<=3; k++)
std[k].display();

}

Paul_from_Connecticut

Re: Error in OOP call

Joaquín M López Muñoz9-May-02 9:08