C / C++ / MFC

Re: Visual studio 2010 - class wizard

23-Jul-14 16:58

With visual studio 6 you were able to delete the .clw file to re-build the class wizard if you made a lot of changes in the source files and that were not showing in the class wizard.

How do you do this with VS 2010 - there is no longer a .clw file.

Stefan_Lang24-Jul-14 23:25

Stefan_Lang

24-Jul-14 23:25

The .clw file is gone, and, apparently, with it the ability to rebuild it. But maybe you can find some help on MSDN: http://msdn.microsoft.com/en-us/library/6761383e%28v=vs.100%29.aspx[^]

Regarding classes not showing, maybe this will help. http://stackoverflow.com/questions/4883229/mfc-vs-2010-class-wizard-doesnt-show-the-class-names-for-the-dialog-boxes[^]

GOTOs are a bit like wire coat hangers: they tend to breed in the darkness, such that where there once were few, eventually there are many, and the program's architecture collapses beneath them. (Fran Poretto)

How to connect and access a SQLite database via C++

sarah0023-Jul-14 8:26

sarah00

23-Jul-14 8:26

I want to update the database based on triggers . I need the database to get updated automatically based on already written code.I do not want to manually execute queries to update the database

Re: How to connect and access a SQLite database via C++

Richard Andrew x6423-Jul-14 8:39

Richard Andrew x64

23-Jul-14 8:39

So what is your question?

The difficult we do right away...
...the impossible takes slightly longer.

Re: How to connect and access a SQLite database via C++

PIEBALDconsult23-Jul-14 8:48

PIEBALDconsult

23-Jul-14 8:48

Please don't cross-post.

How to connect and access SQLite database[^]

You'll never get very far if all you do is follow instructions.

How do you do data exchange (as in DDX_ functions/macros)....

Member 1095872123-Jul-14 5:50

Icons are displayed as black squares on remote desktops

23-Jul-14 5:50

If you have a CMFCShellListCtrl..........CListCtrl with multiple selections?

APSAccounts23-Jul-14 4:36

Re: Icons are displayed as black squares on remote desktops

23-Jul-14 4:36

Hey guys,

I'm encountering the following problem. I wolud very much appreciate your help.

Description of the problem
MFC Desktop Application
VisualStudio 2010
Icons are supposed to be displayed in a CListCtrl as a CImageList.
It usually works fine except when using RemoteDesktop with the OS Windows 2008 / 2003.
In these particular cases the icons are just displayed as a black square.
Connecting with VMware vSphere (alternative to RemoteDesktop) -> Icons are shown appropriately
Remotdesktop on Windows XP / 7 / 8 -> Icons are shown appropriately

Code:

OnInitDialog()
{
/*
~Standardcode
*/

// Setting the symbol for this dialog-field. This is done automatically
// if the mainwindow of the application is no dialog-field.
SetIcon(m_hIcon, TRUE); // using big symbol
SetIcon(m_hIcon, FALSE); // using small symbol

// TODO: appending additional initialization
InitList(); //
m_list.SetImageList(imageList, LVSIL_NORMAL);

//captions
CString buf = _T("testitem");
m_list.InsertItem(0, buf, 0);
m_list.SetItemData(0, (DWORD) 0);
m_list.SetItemText(0, 0, _T("0"));

m_list.SetItemState(0, 2, LVIS_SELECTED);
m_list.EnsureVisible(0, FALSE);
}

void CDispomarkierungTestDlg::InitList()
{
imageList = new CImageList();
int err = imageList->Create(16, 16, ILC_COLOR32 | ILC_MASK, 1, 1); //ILC_COLOR16 , ILC_COLOR8 , ... getested
int id = 40;
int requiredLength = 3154;
LPCSTR picInCharsFromDB = GetBitmapAsText();
int width = 24;
int heigth = 24;
int pixel = 32;
int planes = 1;
BYTE *picInBytes = new BYTE[requiredLength];
int lengthVariable = requiredLength;
int* lengthPointer;
lengthPointer = &lengthVariable;

Base64Decode(picInCharsFromDB, requiredLength, picInBytes, lengthPointer);

HANDLE hBitMap = CreateBitmap(width, heigth, planes, pixel, picInBytes);

BITMAP bitmap;
GetObject(hBitMap,sizeof(BITMAP),&bitmap);

CImage image;
image.Attach((HBITMAP)hBitMap);

CBitmap icon;
icon.Attach((HBITMAP)hBitMap);

CBitmap* bitmappointer;
bitmappointer = &icon;

BITMAP bmp;
icon.GetBitmap(&bmp);

CClientDC dcClient(this);
CDC memDC;
memDC.CreateCompatibleDC(&dcClient);

HBITMAP hbmMask = ::CreateCompatibleBitmap(memDC.GetSafeHdc(), width, heigth);

ICONINFO ii = {0};
ii.fIcon = TRUE;
ii.hbmColor = icon;
ii.hbmMask = hbmMask;

HICON hIcon = ::CreateIconIndirect(&ii);
::DeleteObject(hbmMask);
err = imageList->Add(hIcon);
}

In the real application, the source is a database which saves the Bitmap as a string. That’s the reason for the complicated code during the loading. Loading the images as a resource is possible, but in this case no option.
Drivers of server and client are updated to latest version.
I added the project here https://www.hidrive.strato.com/lnk/gRuMg38R. Thanks for helping out

Richard Andrew x6423-Jul-14 5:02

Richard Andrew x64

23-Jul-14 5:02

From your explanation it's not clear whether Windows 2008 and 2003 represent the remote desktop, or the desktop on which you are viewing the remote desktop.

The difficult we do right away...
...the impossible takes slightly longer.

Re: Icons are displayed as black squares on remote desktops

APSAccounts23-Jul-14 5:07

Re: Icons are displayed as black squares on remote desktops

23-Jul-14 5:07

They represent the remote desktop on which the application runs, sorry for the unclarity.

Richard MacCutchan23-Jul-14 6:14

Re: Icons are displayed as black squares on remote desktops

23-Jul-14 6:14

What does GetBitmapAsText(); do, are you sure it is returning the correct data?

APSAccounts23-Jul-14 22:11

Re: Icons are displayed as black squares on remote desktops

23-Jul-14 22:11

Please don't bother about GetBitmapAsText(); because it only exists in the demo project in order to replace the complex algorithm and database infrastructure in the real project and make the problem portable. The correct loading of picture data from DB can be assumed because the problem is not that the picture can't be seen at all but that it can only be seen in certain circumstances.

Richard MacCutchan23-Jul-14 22:18

Re: Icons are displayed as black squares on remote desktops

23-Jul-14 22:18

APSAccounts wrote:
complex algorithm and database infrastructure

To load an icon?

APSAccounts wrote:
is not that the picture can't be seen at all but that it can only be seen in certain circumstances.

Well apart from the fact that it happens on some systems but not on some others, we have no real information to go on.

APSAccounts23-Jul-14 22:43

Re: Icons are displayed as black squares on remote desktops

23-Jul-14 22:43

The demo project gives you the function GetBitmapAsText(); which constantly and reliably delivers the same picture because it always returns a hardcoded string of base64-encoded picture data. Despite of this fact and despite of the constant algorithm for the presentation the presentation of the picture differs depending on the system. Therefore, for me the reason for the problem is situated somewhere in the interaction of the presentation algorithm with the specific system.

The only bridge I could build for you in order to make the picture data more transparent, would be to get rid of the base64 encoding and hardcode the picture data directly into picInBytes (BYTE*) as it is consumed by the API function CreateBitmap. But would it really help?

The only reason for checking the picutre data once again would be for me the knowledge of a limitation saying that CreateBitmap needs the data on different systems in different forms...

Richard MacCutchan23-Jul-14 22:48

Re: Icons are displayed as black squares on remote desktops

23-Jul-14 22:48

APSAccounts wrote:
the knowledge of a limitation saying that CreateBitmap needs the data on different systems in different forms...

That is most unlikely, as it would affect half the systems across the world. You could always check that by looking at the documentation.

APSAccounts23-Jul-14 22:58

23-Jul-14 22:58

Well, we have to distinguish between published knowledge, unpublished/internal one and achieved by experience one. Writing here we primarly hope to find the third kind... but the first two kinds are welcome, too, of course.

Using CMFCShellListCtrl

Member 1095872122-Jul-14 6:28

Re: Using CMFCShellListCtrl

22-Jul-14 6:28

I know the functions you use to get the current working directory in the control, but how do you get a list of selected files from it?

I can't find any examples of this.

Richard Andrew x6422-Jul-14 8:44

Richard Andrew x64

22-Jul-14 8:44

You've been given a good answer to this immediately below. Why did you post it again?

EDIT:

Never mind, I see that you reposted this before Richard MacCutchan's response. It was probably a mistake.

The difficult we do right away...
...the impossible takes slightly longer.

modified 22-Jul-14 14:56pm.

Re: Using CMFCShellListCtrl

Member 1095872122-Jul-14 15:37

22-Jul-14 15:37

Accident.

Using CMFCShellListCtrl

Member 1095872122-Jul-14 6:24

Re: Using CMFCShellListCtrl

22-Jul-14 6:24

I have found the functions that you use to obtain the current working directory in the control, but how do you get a list of selected files (or other objects) from it.

I have not been able to find an example any where thus far.

Can you point me in the direction of such a code example?

Richard MacCutchan22-Jul-14 6:54

Visual studio 2010 compile error - I don't understand how to fix it

22-Jul-14 6:54

You need to look up the inheritance chain to see what features are made available through its parent classes. The ClistCtrl[^] class provides what you are looking for.

Member 1095872122-Jul-14 5:23

Re: Visual studio 2010 compile error - I don't understand how to fix it

22-Jul-14 5:23

Error   1   error C2504: 'CMyDialog' : base class undefined c:\greg\easywebstoreuploader\easywebstoreuploaderdlg.h  9

In the source file I have included the MyDialog.h above the header file containing the class definition for CEasyWebStoreUploaderDlg but I can't pi$$ this compiler error off and I don't understand why.
Can any one help me?

XML

#include "stdafx.h";
#include "INI.h"
#include <afxinet.h>
#include <afxcmn.h>
#include "MyDialog.h"
//#include "ServerDialog.h"
//#include "ImageDialog.h"
#include "EasyWebStoreUploaderDlg.h"
#include "EasyWebStoreUploader.h"

Header file

/ EasyWebStoreUploaderDlg.h : header file
//

#pragma once

// CEasyWebStoreUploaderDlg dialog
class CEasyWebStoreUploaderDlg : public CMyDialog
{
	// Construction
	public:
		CEasyWebStoreUploaderDlg(CWnd* pParent = NULL);	// standard constructor
		~CEasyWebStoreUploaderDlg();

		// Dialog Data
		enum { IDD = IDD_EASYWEBSTOREUPLOADER_DIALOG };

	protected:
		virtual void DoDataExchange(CDataExchange* pDX);	// DDX/DDV support

	// Implementation
	protected:
		HICON m_hIcon;
		//CServerDialog m_dialogServer;

		// Generated message map functions
		virtual BOOL OnInitDialog();
		afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
		afx_msg void OnPaint();
		afx_msg HCURSOR OnQueryDragIcon();
		DECLARE_MESSAGE_MAP()

	public:
		afx_msg void OnClickConnect();
		afx_msg void OnClickUploadAll();

		afx_msg void OnChangeTab(NMHDR *pNMHDR, LRESULT *pResult);
		CTabCtrl m_tabCtrl;
};

Source file

// EasyWebStoreUploaderDlg.cpp : implementation file
//

#include "stdafx.h"
#include "INI.h"
#include <afxinet.h>
#include "afxcmn.h"
#include "MyDialog.h"
//#include "ServerDialog.h"
//#include "ImageDialog.h"
#include "EasyWebStoreUploaderDlg.h"
#include "EasyWebStoreUploader.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CAboutDlg dialog used for App About

class CAboutDlg : public CDialogEx
{
	public:
		CAboutDlg();

	// Dialog Data
		enum { IDD = IDD_ABOUTBOX };

		protected:
		virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

	// Implementation
	protected:
		DECLARE_MESSAGE_MAP()
};

CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
{
}

void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialogEx::DoDataExchange(pDX);
}

BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()


// CEasyWebStoreUploaderDlg dialog

CEasyWebStoreUploaderDlg::CEasyWebStoreUploaderDlg(CWnd* pParent /*=NULL*/)
	: CMyDialog(CEasyWebStoreUploaderDlg::IDD, pParent)
{
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

Jochen Arndt22-Jul-14 5:44

Jochen Arndt

22-Jul-14 5:44

You should include MyDialog.h in EasyWebStoreUploaderDlg.h and not in the source file. If you than still get the error, check the definition of CMyDialog in MyDialog.h.

Re: Visual studio 2010 compile error - I don't understand how to fix it

Member 1095872122-Jul-14 6:26