C / C++ / MFC Discussion Boards

Re: Why is there no cfind() in the std containers?

Craig Longman20-Jun-11 12:59

20-Jun-11 12:59

Sorry, I should have been more specific. Rather than general containers (some of which, you're right, have to use the find function) the map/set and the new unordered ones. They do have a member function, so could quite easily do the same thing as cbegin()/cend(), at least I can't see any reason why not.

For the not-to-const, I don't exactly follow. Gonna go play a bit to see what you mean.

Thanks,

CraigL

[SOLVED]CWebBrowser2 not getting displayed on a dialog in a dll. [modified]

chandu00414-Jun-11 11:26

chandu004

14-Jun-11 11:26

Hi, iam trying to display a browser control of type CWebBrowser2 in a dialog, which will be initiated from a dll.

now, the problem is, the dialog is getting displayed properly, when i dont insert the webbrowser control.

but when i draw the webbrowser control on the dialog, it is not showing up.

i even tried to create it dynamically, but Create method is returning by closing the application.

any ideas?
thanks in advance.

modified on Friday, June 17, 2011 5:19 PM

Re: CWebBrowser2 not getting displayed on a dialog in a dll.

chandu00414-Jun-11 12:19

chandu004

14-Jun-11 12:19

further investigations on this issue, concluded that, the window itself was not getting properly created for the web browser control. any ideas?

--------------------------------------------
Suggestion to the members:
Please prefix your main thread subject with [SOLVED] if it is solved.
thanks.
chandu.

Re: CWebBrowser2 not getting displayed on a dialog in a dll.

pix_programmer14-Jun-11 21:08

pix_programmer

14-Jun-11 21:08

chandu004 wrote:
the window itself was not getting properly created for the web browser control.

Derive your Dialog from CDialog instead of CHtmlDialog, while adding the Dialog through MFC Wizard and add a web browser control to it. Use the Navigate() method to browse to a URL.

[SOLUTION]

chandu00417-Jun-11 11:19

chandu004

17-Jun-11 11:19

after some browse through the net, i could solve this problem by adding AfxOleInit() in the calling application's InitInstance.

convert short to Cstring...

spalanivel14-Jun-11 2:27

spalanivel

14-Jun-11 2:27

Hi,

short m_start_year;

COleDateTime tm = COleDateTime::GetCurrentTime();

m_start_year = (short) tm.GetYear();

I need to convert this m_start_year to CString to pass a argument for below function.

CString result_startdate = GetShowYear(m_start_year);

CString GetShowYear(CString m_start_year)
{
// Here i will do the Inline query and get the show start date.
}

In the above code how to cast short to CString as the GetShowYear need to pass only CString value but from tm.GetYear() i am getting as "short" value.

Any idea?

Reg,
SPa

Re: convert short to Cstring...

వేంకటనారాయణ(venkatmakam)14-Jun-11 2:37

వేంకటనారాయణ(venkatmakam)

14-Jun-11 2:37

Use CString::Format funcion to convert short to string like this.

CString strYear;
strYear.Format("%d", m_start_year);

http://www.mono-project.com/Main_Page

Re: convert short to Cstring...

Albert Holguin14-Jun-11 3:29

Albert Holguin

14-Jun-11 3:29

Simple yet very effective. Thumbs Up | :thumbsup:

Re: convert short to Cstring...

Richard MacCutchan14-Jun-11 2:41

Richard MacCutchan

14-Jun-11 2:41

You cannot cast a short to a string, you need to use a converter such as sprintf() or similar.

The best things in life are not things.

Re: convert short to Cstring...

Cool_Dev15-Jun-11 3:45

Cool_Dev

15-Jun-11 3:45

In addition, _itoa() and similar functions are also there.

[SOLVED] Problem with adding set of strings from registry to combobox [modified]

Gaurav Paul14-Jun-11 0:45

Gaurav Paul

14-Jun-11 0:45

This code only writes the last registry entry to the ComboBox.

*I want to read all the registry entries and insert it to a ComboBox(DropDown List)*

	                        HKEY phkResult = NULL;
				LONG enumresult = 0;
				TCHAR valuename[256]={0};
				BYTE valuedata[4096]={0};
				DWORD valuenamesize = sizeof(valuename);
				DWORD valuedatasize = sizeof(valuedata);
				
				if (RegOpenKeyEx(HKEY_CURRENT_USER,
				"Software\\MY_PROG_KEY",0,KEY_READ,&phkResult) == ERROR_SUCCESS)
				{
                                CCombo* InsCombo;
				InsCombo = (CComboBox*) GetDlgItem(IDC_COMBO1);
				int index = 0;

				do
				{

				DWORD valuenamesize = sizeof(valuename);//Resetting the size variable (Trying to troubleshoot my self)
				DWORD valuedatasize = sizeof(valuedata);	

				enumresult=RegEnumValue(phkResult, index, valuename, &valuenamesize, 0,
				NULL,
				valuedata,
				&valuedatasize);
				
				m_ComboStr1=valuedata;
			
			//	InsCombo->InsertString(index,m_ComboStr1); //Same Problem with this statement also
					
				InsCombo->AddString(m_ComboStr1);

				UpdateData(FALSE);
				index ++;
				m_ComboStr1='\0';
				

				}while (enumresult != ERROR_NO_MORE_ITEMS);
				
				
				RegCloseKey(phkResult);  
			



				}
<div class="modified">modified on Wednesday, June 15, 2011 5:21 AM</div>

Re: Problem with adding set of strings from registry to combobox

Niklas L14-Jun-11 1:23

Niklas L

14-Jun-11 1:23

It looks like you're misusing UpdateData() in the loop. Remove it, and handle such things after the loop.

Re: Problem with adding set of strings from registry to combobox

Gaurav Paul14-Jun-11 2:00

Gaurav Paul

14-Jun-11 2:00

I did that already, but after moving it outside the loop; ComboBox is not showing any string.

Re: Problem with adding set of strings from registry to combobox

Richard MacCutchan14-Jun-11 2:39

Richard MacCutchan

14-Jun-11 2:39

What is the definition of m_ComboStr1; also have you checked (with the debugger) that you are getting a valid string from RegEnumValue()? I note also that you are redeclaring valuenamesize and valuedatasize within your do loop: this is not correct (even though it will not cause problems in this instance). Other than that the code would seem to be correct.

The best things in life are not things.

Re: Problem with adding set of strings from registry to combobox

Gaurav Paul14-Jun-11 20:35

Gaurav Paul

14-Jun-11 20:35

This piece of code as you suggested gives following error. Please Suggest.

Previous case : m_ComboStr1 is variable attached to the ComboBox (CString type)

Note: I'm new to VC++ programming.

error C2664: 'AddString' : cannot convert parameter 1 from 'unsigned char' to 'const char *'
Conversion from integral type to pointer type requires reinterpret_cast, C-style cast or function-style cast

// *Code Starts Here

				HKEY phkResult = NULL;
				LONG enumresult = 0;
				TCHAR valuename[256]={0};
				BYTE valuedata[4096]={0};
				DWORD valuenamesize = sizeof(valuename);
				DWORD valuedatasize = sizeof(valuedata);
				
				if (RegOpenKeyEx(HKEY_CURRENT_USER,
				"Software\\MY_PROG_KEY",0,KEY_READ,&phkResult) == ERROR_SUCCESS)
				{
                                CComboBox* InsCombo;
				InsCombo = (CComboBox*) GetDlgItem(IDC_COMBO1);
				int index = 0;
 
				do
				{	
 
				enumresult=RegEnumValue(phkResult, index, valuename, &valuenamesize, 0,
				NULL,
				valuedata,
				&valuedatasize);
 
					
				InsCombo->AddString(valuedata[index]);
				index ++;
			
 
				}while (enumresult != ERROR_NO_MORE_ITEMS);
				
				
				RegCloseKey(phkResult);  
			
 
				}
 
	// *Code Ends Here

Re: Problem with adding set of strings from registry to combobox

Richard MacCutchan14-Jun-11 21:48

Richard MacCutchan

14-Jun-11 21:48

Well the message is pretty clear; you are passing a character to a function that expects a string (const char*). Try changing to something of the order of:

InsCombo->AddString(reinterpret_cast<const char*>(valuedata));

The best things in life are not things.

Re: Problem with adding set of strings from registry to combobox [modified]

Gaurav Paul14-Jun-11 22:52

Gaurav Paul

14-Jun-11 22:52

I appreciate your help.

The same code worked; as I did a silly mistake I needed to increase the drop down area Roll eyes | :rolleyes:

Thanks

// *Code Starts Here

				HKEY phkResult = NULL;
				LONG enumresult = 0;
				TCHAR valuename[256]={0};
				BYTE valuedata[4096]={0};
				DWORD valuenamesize = sizeof(valuename);
				DWORD valuedatasize = sizeof(valuedata);
				
				if (RegOpenKeyEx(HKEY_CURRENT_USER,
				"Software\\MY_PROG_KEY",0,KEY_READ,&phkResult) == ERROR_SUCCESS)
				{

                                CComboBox* InsCombo;
				InsCombo = (CComboBox*) GetDlgItem(IDC_COMBO1);
				int index = 0;


				while(RegEnumValue(phkResult, index, valuename, &valuenamesize, 0,
				NULL,
				valuedata,
				&valuedatasize)!=ERROR_NO_MORE_ITEMS)

				{
			
				InsCombo->AddString(reinterpret_cast<const char*>(valuedata));

				index ++;
				
				}
				
				}

				
	RegCloseKey(phkResult);  
	return TRUE;  

	// *Code Ends Here

modified on Wednesday, June 15, 2011 5:20 AM

Re: Problem with adding set of strings from registry to combobox

Richard MacCutchan14-Jun-11 23:05

Richard MacCutchan

14-Jun-11 23:05

Gaurav Paul wrote:
InsCombo->AddString(reinterpret_cast<const char*>(valuedata[index]));

You should not be using an offset value (valuedata[index]) but merely the address of the array (valuedata) as shown in my previous post.

The best things in life are not things.

Re: Problem with adding set of strings from registry to combobox

Gaurav Paul14-Jun-11 23:21

Gaurav Paul

14-Jun-11 23:21

I have done that; actually I posted the old code. Thumbs Up | :thumbsup:

Re: Problem with adding set of strings from registry to combobox

Richard MacCutchan15-Jun-11 0:38

Richard MacCutchan

15-Jun-11 0:38

Am I to assume it is now working successfully?

The best things in life are not things.

Re: Problem with adding set of strings from registry to combobox

Gaurav Paul15-Jun-11 20:16

Gaurav Paul

15-Jun-11 20:16

Yes it is! Thanks. Big Grin | :-D

Re: Problem with adding set of strings from registry to combobox

David Crow14-Jun-11 4:42

David Crow

14-Jun-11 4:42

gaurav.paul wrote:
UpdateData(FALSE);

I wouldn't go any further until this was removed.

gaurav.paul wrote:
m_ComboStr1=valuedata;

Why the extra variable? AddString() can be called with valuedata.

gaurav.paul wrote:
InsCombo->AddString(m_ComboStr1);

What is this returning?

gaurav.paul wrote:
m_ComboStr1='\0';

What's the purpose of this? It's unnecessary.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Some people are making such thorough preparation for rainy days that they aren't enjoying today's sunshine." - William Feather

Re: Problem with adding set of strings from registry to combobox

Gaurav Paul14-Jun-11 20:16

Gaurav Paul

14-Jun-11 20:16

// *Code Starts Here

				HKEY phkResult = NULL;
				LONG enumresult = 0;
				TCHAR valuename[256]={0};
				BYTE valuedata[4096]={0};
				DWORD valuenamesize = sizeof(valuename);
				DWORD valuedatasize = sizeof(valuedata);
				
				if (RegOpenKeyEx(HKEY_CURRENT_USER,
				"Software\\MY_PROG_KEY",0,KEY_READ,&amp;phkResult) == ERROR_SUCCESS)
				{
                                CComboBox* InsCombo;
				InsCombo = (CComboBox*) GetDlgItem(IDC_COMBO1);
				int index = 0;

				do
				{	

				enumresult=RegEnumValue(phkResult, index, valuename, &amp;valuenamesize, 0,
				NULL,
				valuedata,
				&amp;valuedatasize);

					
				InsCombo-&gt;AddString(valuedata[index]);
				index ++;
			

				}while (enumresult != ERROR_NO_MORE_ITEMS);
				
				
				RegCloseKey(phkResult);  
			

				}

	// *Code Ends Here

Re: Problem with adding set of strings from registry to combobox

David Crow15-Jun-11 2:04

David Crow

15-Jun-11 2:04

Gaurav Paul wrote:
InsCombo->AddString(valuedata[index]);

This is not what I suggested. Use:

InsCombo->AddString(valuedata);

Re: Problem with adding set of strings from registry to combobox

Gaurav Paul15-Jun-11 20:17

Gaurav Paul

15-Jun-11 20:17

Okay. Thanks!

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