C / C++ / MFC Discussion Boards

Laffis26-Sep-05 23:41

26-Sep-05 23:41

Not familiar with the terminology you use: what do you mean by hook? R u talking about linking (either dynamically or statically) dll?

Re: Help hooking Windows API functions

ThatsAlok27-Sep-05 1:42

ThatsAlok

27-Sep-05 1:42

Laffis wrote:
what do you mean by hook? R u talking about linking (either dynamically or statically) dll?

what is HOOK? good question here is answer :-
http://www.codeproject.com/system/hooksys.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

To save & restore Files and Folders

rajeevktripathi26-Sep-05 23:16

rajeevktripathi

26-Sep-05 23:16

Hi All

I want to save some files, & folders to specified location given by user and again restore that saved files & Folders to given specified location.

Please suggest me that how can I do it

Thanks.

Re: To save & restore Files and Folders

AHawk26-Sep-05 23:56

AHawk

26-Sep-05 23:56

You can use your CWinApp derived class in either a Dialog based application, or Multi/Single based app. What you do is create a CString variable in that derived class and load it by GetProfileString( LPCTSTR lpszSection,
LPCTSTR lpszEntry,
LPCTSTR lpszDefault = 0 );

Such as:

class header:

class CWhateverClass
{
. . .

private:
CString FileName;
}

class source:

BOOL CWhateverClass::InitInstance()
{
. . .
FileName = GetProfileString( "Saved", SavedFileName, FileName );
. . .
}

int CWhateverClass::ExitInstance()
{
. . .
WriteProfileString( "Saved", SavedFileName, FileName );
. . .
return CWinApp::ExitInstance();
}

You are able to manipulate the CString FileName from other parts of your app by using theApp.
Hope I hit what you were getting at. Aaron

Undeclared Identifier

rajeevktripathi26-Sep-05 23:04

rajeevktripathi

26-Sep-05 23:04

Hi All

I am using Outlook object model in order to access MS outlook folders and other informations.

Here I have imported "mso.dll & msoutl.olb" files.

Then I am using code as below

<br />
<br />
void CMSOutlookDlg::AddFolders( )<br />
{<br />
<br />
     _ApplicationPtr pApp;<br />
	_ItemsPtr       pItems;<br />
	MAPIFolder      pFolder;<br />
	_ContactItemPtr pContact;<br />
<br />
      hr = pApp.CreateInstance(__uuidof(Application));<br />
     <br />
}<br />
<br />

then it gives error

<br />
f:\msoutlook\debug\mso.tlh(1036) : warning C4146: unary minus operator applied to unsigned type, result still unsigned<br />
F:\MSOutlook\MSOutlookDlg.cpp(131) : error C2065: '_ApplicationPtr' : undeclared identifier<br />
F:\MSOutlook\MSOutlookDlg.cpp(131) : error C2146: syntax error : missing ';' before identifier 'pApp'<br />
F:\MSOutlook\MSOutlookDlg.cpp(131) : error C2065: 'pApp' : undeclared identifier<br />
F:\MSOutlook\MSOutlookDlg.cpp(132) : error C2065: '_ItemsPtr' : undeclared identifier<br />
F:\MSOutlook\MSOutlookDlg.cpp(132) : error C2146: syntax error : missing ';' before identifier 'pItems'<br />
F:\MSOutlook\MSOutlookDlg.cpp(132) : error C2065: 'pItems' : undeclared identifier<br />
F:\MSOutlook\MSOutlookDlg.cpp(133) : error C2065: 'MAPIFolder' : undeclared identifier<br />
F:\MSOutlook\MSOutlookDlg.cpp(133) : error C2146: syntax error : missing ';' before identifier 'pFolder'<br />
F:\MSOutlook\MSOutlookDlg.cpp(133) : error C2065: 'pFolder' : undeclared identifier<br />
F:\MSOutlook\MSOutlookDlg.cpp(135) : error C2065: '_ContactItemPtr' : undeclared identifier<br />
F:\MSOutlook\MSOutlookDlg.cpp(135) : error C2146: syntax error : missing ';' before identifier 'pContact'<br />
F:\MSOutlook\MSOutlookDlg.cpp(135) : error C2065: 'pContact' : undeclared identifier<br />
Generating Code...<br />
Error executing cl.exe.<br />
Creating browse info file...<br />
<br />
MSOutlook.exe - 12 error(s), 1 warning(s)<br />

Please help me that why is this happening?
Also if u have some sample to retrieve folders & message of MS outlook then pls provide it

Thanks

Re: Undeclared Identifier

Roger Stoltz26-Sep-05 23:25

Roger Stoltz

26-Sep-05 23:25

Aren't the imported types declared in another namespace?
Have a look in the generated header files.

--
Roger

Re: Undeclared Identifier

toxcct26-Sep-05 23:34

toxcct

26-Sep-05 23:34

did you correctly #included the header which defines the _ApplicationPtr type ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: Undeclared Identifier

prasad_som26-Sep-05 23:36

prasad_som

26-Sep-05 23:36

have you used #import statement. If not you need to add one
like

// Change the path to msoutl85.olb if necessary.
   #import "C:\\Program Files\\MicrosoftOffice\\Office\\msoutl85.olb"\ 
   no_namespace exclude("_IRecipientControl", "_DRecipientControl")

For more info search MSDN for "HOWTO: Use Microsoft Outlook Object Model From Visual C++ Through an #IMPORT Statement"

kk.tvm26-Sep-05 22:27

kk.tvm

26-Sep-05 22:27

Hi
How to register a file type in Windows Registry and assign a default program to that file type.

Eg: *.Txt files are Text Files and Default program is notepad

Regard

KK

Re: Register File Type in Registry

Blake Miller27-Sep-05 4:30

Blake Miller

27-Sep-05 4:30

How about my article :->

Associate File Extension with Shell OPEN command and Application
http://www.codeproject.com/shell/cgfiletype.asp[^]

Aggregate compiler problem...

toxcct26-Sep-05 22:13

toxcct

26-Sep-05 22:13

Hello everyone,
I have a little problem with a struct that i would like to create the way you will see below. i am using Visual C++ 6 :

VCalcParserTypes.h
 
<font color=blue>#include</font> <STRING>	<font color=green>// std::string</font>
 
<font color=green>// Type for the handled operands and results</font>
<font color=blue>typedef long double</font> <font color=purple>VALUES_TYPE</font>;
 
<font color=green>// Type for an entry in the answers history</font>
<font color=blue>typedef struct</font> {
    <font color=blue>const</font> std::string  m_strFormula;
    <font color=blue>const</font> <font color=purple>VALUES_TYPE</font>  m_valResult;
} <font color=purple>AnswerItem</font>; 
 
<hr>
VCalcParser.h
 
<font color=blue>#include</font> <STRING>	<font color=green>// std::string</font>
<font color=blue>#include</font> <DEQUE>	<font color=green>// std::deque</font>
<font color=blue>#include</font> <font color=gray>"VCalcParserTypes.h"</font>
 
<font color=green>////////////////////////////////////////////////////////////////
// VisualCalc 2.20 Parser...</font>
<font color=blue>class</font> CVCalcParser {
  <font color=blue>private</font>:
    <font color=green>//...</font>
    std::string             m_Source;               <font color=green>// Reference to the input stream</font>
    std::deque<<font color=purple>AnswerItem</font>>  m_dqeAnswersHistory;    <font color=green>// Answers History mapping a formula with a result</font>
 
  <font color=blue>public</font>:
    <font color=green>//Parsing functions following (in the recursive-descending order)...</font>
    <font color=purple>VALUES_TYPE</font> Evaluate(<font color=blue>const</font> std::string& Source);
    <font color=green>//...</font>
};
 
<hr>
VCalcParser.cpp
 
<font color=green>// Returns the result of the parsed formula</font>
<font color=purple>VALUES_TYPE</font> CVCalcParser::Evaluate(<font color=blue>const</font> std::string& Source) {
    <font color=blue>this</font>->ResetParserMembers(Source);
    <font color=blue>try</font> {
        <font color=purple>VALUES_TYPE</font> valResult = <font color=blue>this</font>->Level_1();
        <font color=purple>AnswerItem</font> AnsItem = { <font color=blue>this</font>->m_Source, valResult };    // <--- ERROR HERE
        <font color=blue>this</font>->m_dqeAnswersHistory.push_front(AnsItem);
        <font color=blue>return</font> valResult;
    }
    <font color=blue>catch</font> (...) {
        <font color=blue>throw</font>;
    }
}

At the line quoted on the previous code, the compiler gives me a :

error C2552: 'AnsItem' : non-aggregates cannot be initialized with initializer list

Seing the MSDN, my AnswerItem type IS an aggregate :
- no constructor,
- no private/protected members,
- no base class,
- no virtual functions...

any suggestion ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

-- modified at 4:22 Tuesday 27th September, 2005

Re: Aggregate compiler problem...

prasad_som26-Sep-05 23:14

prasad_som

26-Sep-05 23:14

this link says "In addition, Visual C++ does not allow data types in an aggregate that contains constructors"
http://msdn2.microsoft.com/en-us/library/0s6730bb[^]

Re: Aggregate compiler problem...

toxcct26-Sep-05 23:40

toxcct

26-Sep-05 23:40

yeah, i saw this, but did not pay attention to it that much (shame on me)...

thank you

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Re: Aggregate compiler problem...

Roger Stoltz26-Sep-05 23:19

Roger Stoltz

26-Sep-05 23:19

toxcct wrote:
Seing the MSDN, my AnswerItem type IS an aggregate :

Well, how about the std::string member? Wink | ;)

Also remove the const directive.

--
Roger

Re: Aggregate compiler problem...

toxcct26-Sep-05 23:29

toxcct

26-Sep-05 23:29

wow, damn, yep, you might be right Smile | :)

i wanted to avoid assigning each member one by one, but i realize that i'll have to... D'Oh! | :doh:

thanks anyway

TOXCCT >>> GEII power
[toxcct][VisualCalc]

how to upgrade a lib from vc6 version to vc7's?

tankwan26-Sep-05 22:08

tankwan

26-Sep-05 22:08

without source file. i have the library file.
but the lib is in vc6 version. how can i use it in my vc7 projects?

Unable open the files (*.h and *.cpp) for class *dlg

wenhou26-Sep-05 21:48

wenhou

26-Sep-05 21:48

Dear sir:
I obtained a warrning dialog message, saying "Unable open the files(C:\VC60\SKetcher16\ScaleDialog.h, C:\VC60\SKetcher16\ScaleDialog.cpp) for class "CScalDialog" when I am trying to obtain the new class of the CScalDialog by using Class Wizard. I uninstalled the Visual C++ 6.0 and installed it for many times. Still I can't resolve the problem. I am using Windows XP as the OS. Anyone know how to fix it. Notify me please.

Scincerely Yours.

wen hou

Re: Unable open the files (*.h and *.cpp) for class *dlg

Cool Ju27-Sep-05 18:23

Cool Ju

27-Sep-05 18:23

Hi wen,

Delete the .clw file(better to take a backup Wink | ;)

). Open the project and goto classwizard and create new .clw file by including all the files.

Hope this solves ur problem.

Adios,
Cool Ju Cool | :cool:

how to check radio button in another dialog

tamsel26-Sep-05 21:21

tamsel

26-Sep-05 21:21

hi,

how to check radio button in another dialog to the corresponding radio button in one dialog

Re: how to check radio button in another dialog

AHawk26-Sep-05 22:42

AHawk

26-Sep-05 22:42

You can do this by ON_COMMAND messaging. ON_COMMAND messaging sends or pumps a message to your entire program. It gets very tricky when sending messages from one Dialog class to another. The best programming with respect to Dialog based programs, is to keep your Views ( Dialog ) loosely coupled from the inner workings ( Control ). Some go on the idea of MVC ( model, View, Control ) idea. Try to read up on this. Another way is to implement a GoF concept, by using the "Observer pattern" ( plenty of example here in codeproject ). This pattern does the job of keeping the Dialog class loosly coupled, and is continually updated when information is changed, or an action has taken place ( hint: such as a radio button clicked ). All in all, messaging from one dialog to another has its pitfalls.

Re: how to check radio button in another dialog

ThatsAlok26-Sep-05 23:39

ThatsAlok

26-Sep-05 23:39

tamsel wrote:
how to check radio button in another dialog to the corresponding radio button in one dialo

I am confuse between these two api... one of then certainly goign to help :-
CheckDlgButton or SetDlgItemInt

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

printing from CScrollView

vikas amin26-Sep-05 21:06

vikas amin

26-Sep-05 21:06

I have created a view which need to be printed
by a printer , The base class for the view is
the CScrollView.
How can i print all the data, i also want to
ensure that if data is long enought not to
fit on one page then there should be some
blank space left at the starting and ending
of every page.

Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com

GDI problem

hamidreza_buddy26-Sep-05 20:58

hamidreza_buddy

26-Sep-05 20:58

hi buddys
i made adialog based app and
made an animation using SetTimer. i have a Draw() func wich draws when th e timer executes. but after about 30 sec nothing will be drawn anymore(Although the Draw() func executes)i used double buffering.
would u tell me what will cause such a problem
thx

Re: GDI problem

Christian Graus26-Sep-05 21:09

Christian Graus

26-Sep-05 21:09

We can't answer this, by telling us what you want to happen, you're telling us what the code should do. You need to post some code so we can see why it's not doing that.

One possibility is that you're not cleaning GDI resources, and you're running out.

Christian Graus - Microsoft MVP - C++

Re: GDI problem

hamidreza_buddy26-Sep-05 21:27

hamidreza_buddy

26-Sep-05 21:27

oh i havent access to code right now
when i use LoadBitmap() do i have to clean it or something??
i also releaseDC() the DC. do i have to delete memDC??

and i have another question. i have a Draw() func. i call it in onTimer()
is it acceptable? or i should call Draw() in onPaint()?

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.