C / C++ / MFC Discussion Boards

sheetal_065-Mar-07 22:24

5-Mar-07 22:24

I have a window where 3D diagrams are drawn.When the window is maximized the
diagram appears correctly.But when it is minimized or if we change the size of the window the diagram is getting clipped.

Sometimes when the diagram which is clipped originally is displayed without clipping when we change the size.

I need code for resizing the diagram(clipped and unclipped) according to the window size.

plz help... Sigh | :sigh:

Thanks

Re: view problem

Cedric Moonen5-Mar-07 22:30

Cedric Moonen

5-Mar-07 22:30

That depends a lot of what you are using to draw your 3D diagrams. The only thing I can say is that you need to resize the 'window' (or the control) in which they are drawn.

Cédric Moonen
Software developer

Charting control [v1.1]

how to find the character width?

kotakmayurrMCA5-Mar-07 22:23

kotakmayurrMCA

5-Mar-07 22:23

I have compute the character width by using GetTextExtent() but i get wrong value.

The code is: -

///////in fuction1

//setting the character width
m_nCharWidth = dc.GetTextExtent(CString(pChar->GetCharacter()),1).cx;

////////in fuction2

//setting the character width by current character
m_nCharWidth = m_oMemDC.GetTextExtent(CString(m_pChar->GetCharacter()),1).cx;

-----m_oMemDC is created as follow: -

m_oMemDC.CreateCompatibleDC(&dc);

Why these two differs i dont know please help me on this topic?

Thank u

Re: how to find the character width?

PJ Arends5-Mar-07 22:38

PJ Arends

5-Mar-07 22:38

GetTextExtent() uses the font currently selected into the device context in it's calculations. You have to make sure both device contexts have the same font in them in order to get the same result.

You may be right
I may be crazy
-- Billy Joel --

Within you lies the power for good, use it!!!

How to set the caption text in the page of sheet?

dungpapai5-Mar-07 22:22

dungpapai

5-Mar-07 22:22

I have one sheet which is inherited CPropertySheet, I have added 3 page (inherit CPropertyPage) in to the sheet. How to set caption text in each sheet?
I used SetWindowText and SetDlgItemText but not success
Thanks.

Papais

Re: How to set the caption text in the page of sheet?

Xing Chen5-Mar-07 22:31

Xing Chen

5-Mar-07 22:31

try TCM_SETITEM[^] message plz.

hope that's help.

Re: How to set the caption text in the page of sheet?

_AnsHUMAN_ 5-Mar-07 22:56

_AnsHUMAN_

5-Mar-07 22:56

Override the OnSetActive method for the property page and then do this
MyPropSheet* parent = (MyPropSheet*)GetParent();
// Set Title
parent->SetTitle( " This is the title for my property page " , 0 );

I hope this helps...

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

CR+LF in RichEdit20

jsumm5-Mar-07 22:04

jsumm

5-Mar-07 22:04

Hi,

I'm using a RichEditCtrl in a VC++ 6 Mfc application. The RichEdit is Readonly an I'm pasting text inside this control by ReplaceSel(). The text I'm inserting contains several lines which are separated by CR+LF. If I use GetwindowTextLength() I get the correct length for the text, which means, all CR+LF are counted. But if I use e.g. LineIndex(), which should retrieve the length of a specified line, only the text and the CR is counted. How can I tell the Richedit that it should count the LF also. There exists a flag GT_USECRLF, but I don't know how to use it.

Thanks for all answers

Juergen

delete printer Icon from system tray

sajithomas5-Mar-07 21:54

sajithomas

5-Mar-07 21:54

Hi,
How do I delete printer Icon from system tray...

SAJI

Re: delete printer Icon from system tray

Xing Chen5-Mar-07 22:22

Xing Chen

5-Mar-07 22:22

Use Shell_NotifyIcon() to delete the tray icon.
then the problem is how to get the HWND and id number associate with the icon.
Maybe TB_GETBUTTONINFO message is useful for get the HWND and id.(tray is a toolbar32 control,you find it in spy++).
Hope it will help you.

[Win32 C] how save HICON to a icon file?

HOW WHAT5-Mar-07 21:41

HOW WHAT

5-Mar-07 21:41

i searched WriteIconToICOFile( LPICONRESOURCE lpIR, LPCTSTR szFileName );

but how conver HICON to lpIR?

thanks..

Re: [Win32 C] how save HICON to a icon file?

Programm3r5-Mar-07 21:53

Programm3r

5-Mar-07 21:53

Have you had a look at this: ^-^

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: [Win32 C] how save HICON to a icon file?

prasad_som5-Mar-07 21:53

prasad_som

5-Mar-07 21:53

HOW WHAT wrote:
WriteIconToICOFile(

This is not a standard API. Refer article[^], where it is defined and used.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Re: [Win32 C] how save HICON to a icon file?

HOW WHAT5-Mar-07 22:14

HOW WHAT

5-Mar-07 22:14

WriteIconToICOFile is IconPro 's function

Re: [Win32 C] how save HICON to a icon file?

prasad_som5-Mar-07 22:25

prasad_som

5-Mar-07 22:25

This example shows how to go about using it.

Prasad
Notifier using ATL | Operator new[],delete[][^]

How to change "Caption" of Menu Item Dynamcally?

cshivaprasad5-Mar-07 21:39

cshivaprasad

5-Mar-07 21:39

How to change "Caption" of Menu Item Dynamcally?

Shiva

Re: How to change "Caption" of Menu Item Dynamcally?

prasad_som5-Mar-07 22:07

prasad_som

5-Mar-07 22:07

Use ModifyMenu. Look for the example at the end of this[^] API.

Prasad
Notifier using ATL | Operator new[],delete[][^]

DLL Header file content

Programm3r5-Mar-07 21:34

Programm3r

5-Mar-07 21:34

Hi all,

Could someone please give me some more information on the following, I don't really understand it. Many Thanks.

#ifdef STATIC_LIBRARY
  #define DLL_IMPORT_EXPORT
#else
  #ifdef WIN32
    #ifdef DLL_SOURCE_CODE
       #define DLL_IMPORT_EXPORT __declspec(dllexport) __stdcall
    #else
       #define DLL_IMPORT_EXPORT __declspec(dllimport) __stdcall
    #endif
  #endif
#endif

#ifdef __cplusplus
  #define NoMangle extern "C"
#else
  #define NoMangle
#endif

Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Re: DLL Header file content

Cedric Moonen5-Mar-07 21:53

Cedric Moonen

5-Mar-07 21:53

#ifdef STATIC_LIBRARY

This is probably a user defined macro (I don't think this is a standard macro). The user can specify if the library should be a static or a dynamic library.
If it is a static library, then you don't need to add specific keyword before your functions in order to be exported (so, DLL_IMPORT_EXPORT will simply be empty).

In the other, if it is a dynamic library, you need to:
1) export your functions if the project is the dll project (in that case, the macro DLL_SOURCE_CODE will be specified by the user)
2) import your functions if the project is using the dll (in that case, the macro DLL_SOURCE_CODE is not defined).

This is only used on the WIN32 platform (thus the #ifdef WIN32).

That summarize the first part, meaning:

Programm3r wrote:
#ifdef STATIC_LIBRARY
#define DLL_IMPORT_EXPORT
#else
#ifdef WIN32
#ifdef DLL_SOURCE_CODE
#define DLL_IMPORT_EXPORT __declspec(dllexport) __stdcall
#else
#define DLL_IMPORT_EXPORT __declspec(dllimport) __stdcall
#endif
#endif
#endif

For the second part (with the NoMangle), you check if the code is C++ specific or C. If it is C, this language use a different linking mechanism (name mangling) and you then need to specify that you are using the 'C' linking scheme (extern "C").

Hope that helps. If you still don't understand, ask a more precise question (which part you don't understand).

Cédric Moonen
Software developer

Charting control [v1.1]

Re: DLL Header file content

Programm3r5-Mar-07 21:58

Programm3r

5-Mar-07 21:58

Cedric wrote:
which part you don't understand?

No, thank you very much Cedric, that helps alot.
Regards,

The only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r
My Blog: ^_^

Media

Try5-Mar-07 21:33

Try

5-Mar-07 21:33

Hi Everyone,

I need to check whether floppy media is inserted in drive or not (through vc++ program).
Which class should i use? What is the procedure?
Please help me.
Thanks in Advance.

Re: Media

kakan5-Mar-07 21:39

kakan

5-Mar-07 21:39

One way is to do a FindFirst on the floppy drive and check the return code for not reday status.
There are other ways to do it, but this is a (coding wise) simple method.

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Re: Media

Try5-Mar-07 21:43

Try

5-Mar-07 21:43

Thank you.
Will you please elaborate or give example?

Re: Media

kakan5-Mar-07 22:09

kakan

5-Mar-07 22:09

I haven't tested this, but this is the main program flow for it:

WIN32_FIND_DATA fd;

HANDLE h = FindFirstFile("A:\\*.*", &fd);
if(INVALID_HANDLE_VALUE == h) {
   // Didn't work, there are no diskette in the drive, 
   // or the inserted diskette is broken, not formatted, 
   // or some other error.
   DWORD dw = GetLastError();
   // Check dw for ERROR_NOT_READY or somthing similar.
   // The debugger will show you the exact eror code.
}
else FindClose(h);

Adjust the code for unicode, if you need to.

Alcohol. The cause of, and the solution to, all of life's problems - Homer Simpson

Re: Media [modified]

Try5-Mar-07 22:39

Try

5-Mar-07 22:39

Thank you so much for your help.

What if some files are already present in Floppy??
-- modified at 5:08 Tuesday 6th March, 2007

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