C / C++ / MFC

1-Nov-05 16:51

Hey all, I have a dialog that has a richedit control on it. I receive EN_VSCROLL messages through the WM_COMMAND message in the parent window. I can not figuer out how to catch the SB_THUMBPOSITION message.

To catch the EN_VSCROLL messages I had to set the event mask SendMessage(hrichEdit, EM_SETEVENTMASK, 0, LPARAM(SendMessage(hwndDlg, EM_GETEVENTMASK, 0, 0) | ENM_SCROLL ));

Any ideas?

Cheers,

Luke

Prakash Nadar1-Nov-05 17:30

1-Nov-05 17:30

Luke Murray wrote:
SendMessage(hrichEdit, EM_SETEVENTMASK, 0, LPARAM(SendMessage(hwndDlg, EM_GETEVENTMASK, 0, 0) | ENM_SCROLL ));

is hwndDlg intentional instead of hrichEdit?

-prakash

Luke Murray1-Nov-05 17:52

1-Nov-05 17:52

Sorry that is meant to be hrichEdit, like
SendMessage(hrichEdit, EM_SETEVENTMASK, NULL, LPARAM(SendMessage(hrichEdit, EM_GETEVENTMASK, 0, 0) | ENM_SCROLL ));

From what I have read. if you have a winproc for a window you can catch WM_VSCROLL and LOWORD(lParam) will be SB_THUMBPOSITION. the issue I have it when its a scroll message from a child window (like in this case) first you catch WM_COMMAND then EN_VSCROLL through HIWORD(wParam) and lParam in this case is the handle to the richedit control. So i'm not sure how to get the message for SB_THUMBPOSITION from the child window.

I guess I have to have a winproc for the richedit control and handle it through the WM_VSCROLL etc? Then i'm not too sure on how to do that. The dialog is loaded from a resource file as well.

Cheers,

Luke

Prakash Nadar1-Nov-05 18:00

1-Nov-05 18:00

humm, you might want to do subclassing.

-prakash

Luke Murray1-Nov-05 18:07

1-Nov-05 18:07

Yeah, that was something I hoped to avoid. I really would have thought there would be a way.

Calc202-Nov-05 0:39

Calc20

2-Nov-05 0:39

You have to catch WM_HSCROLL or WM_VSCROLL messages and in the WPARAM argument you can find SB_THUMBPOSITION or some other code depending on what the user is doing with the scroll bar.

Luke Murray2-Nov-05 10:59

2-Nov-05 10:59

The problem is WM_VSCROLL etc get sent to the richedit control, not my dialog. the winproc in my dialog I have to catch WM_COMMAND and in that wparam is EN_VSCROLL, and the lparam is the richedit handle, so I lose the SB_THUMBPOSITION and SB_BOTTOM etc.

If i subclassed the richedit and had a winproc for that i could get the WM_VSCROLL messages. but I did not want to sub class the richedit.

Thanks anyway

Luke

Luke Murray2-Nov-05 11:59

2-Nov-05 11:59

Well, I got it. If you add ENM_SCROLLEVENTS to the event mask, you will get the messages through WM_NOTIFY. Then the lParam is a pointer to a MSGFILTER stucture, which gives us the message code of original message, in this case WM_VSCROLL, and LOWORD(msgFilter->wparam) is the SB_*

N ow this is great. Only problem now is the mouse wheel does not fire this event, but it did fire the EN_VSCROLL through WM_COMMAND. annoying.

Thanks all

Luke Murray2-Nov-05 12:04

How to improve my record program's quality?

2-Nov-05 12:04

My bad, the wheel does fire the WM_VSCROLL through WM_NOTIFY. it did ever trigger the SB_ENDSCROLL which I was also testing for.

extraf1-Nov-05 16:30

extraf

1-Nov-05 16:30

I write a record program ,But it's quality is very poor,What effect the
quality except the format

Re: How to improve my record program's quality?

Prakash Nadar1-Nov-05 16:46

1-Nov-05 16:46

bit rate at which the recording was done,

for example 128 bps gives almost a CD-quality recording.

Other possible reason could be your hardware.

-prakash

Debug VS Release

FarPointer1-Nov-05 16:24

FarPointer

1-Nov-05 16:24

Hi,
why is that some errors come in the release mode ,but not in debug mode ,like

Char ch[1];
then i try to copy the wholeno(1,2,....) into it ,it crashes in the release mode but not in the debug mode ,does it assign more space in the debug mode to the ch(in memory) more than told.

Regards
Farpointer

Re: Debug VS Release

Prakash Nadar1-Nov-05 16:45

1-Nov-05 16:45

can you provide us with the copying code?

sometimes programming errors escapes in the debug mode and ideally there is no difference between the functionalit of debug and release apis.

-prakash

Re: Debug VS Release

Prakash Nadar1-Nov-05 17:37

how to get print message if you click print a document by Microsoft word?

1-Nov-05 17:37

this[^] is a good resource too.

-prakash

Re: Debug VS Release

FarPointer1-Nov-05 17:55

FarPointer

1-Nov-05 17:55

thanx prakash it has wat i want

Regards
Farpointer

szcococut1-Nov-05 15:37

szcococut

1-Nov-05 15:37

if you click print a document by Microsoft word,
I want to get the print message in my application,how to do that?
a hook can do that ?
thanks!
braden

-- modified at 21:40 Tuesday 1st November, 2005

Disabled Menu after Modification

romuzu1-Nov-05 15:36

romuzu

1-Nov-05 15:36

This is my first time to post here. Here's my problem. I've written a code to modify my menu text from english to japanese. Translation of text was succesful but after the translation, the translated submenus were disabled. Anybody who got any idea on how I will solve this. Thanks in advanced.

Prakash Nadar1-Nov-05 16:14

1-Nov-05 16:14

Why is it getting disabled in the first place?

How does the chaging the text of the menu looks like?

-prakash

romuzu1-Nov-05 16:51

romuzu

1-Nov-05 16:51

Thanks for the reply.

Here's what I did.

I don't have any idea why its getting disabled. It got disabled after translating the text from english to japanese.

First I open a text file which contains the original text and its translation.
The contents were read and was stored to a map(STL). I've also created a recursive function to traverse the menu and translate the text.
From that recursive function I get the submenus and the number of items under that submenus.

Here's the code:

void CTranslator::TranslateMenu(CMenu* pMenu, int MenuCount)
{
CMenu* SubMenu;
CString String;
char MenuString[50];
int SubMenuCount = 0;
int Index = 0;

do // while (MenuCount != Index)
{
ZeroMemory(MenuString, 50);
pMenu->GetMenuString( Index, MenuString, 50, MF_BYPOSITION);

String.Format ("%s", MenuString);

if(! String.IsEmpty())
{
pMenu->ModifyMenu(Index, MF_BYPOSITION, MF_POPUP, GetTranslation( String ) );
}

SubMenu = pMenu->GetSubMenu(Index);

if(NULL != SubMenu)
{
SubMenuCount = SubMenu->GetMenuItemCount ();
TranslateMenu(SubMenu, SubMenuCount);
}// if(NULL != SubMenu)

pMenu->EnableMenuItem (Index, MF_ENABLED);
Index++;
}while (MenuCount != Index);
}// CTranslator::TranslateMenu(CMenu *pMenu)

Prakash Nadar1-Nov-05 17:17

1-Nov-05 17:17

romuzu wrote:
pMenu->EnableMenuItem (Index, MF_ENABLED);

try pMenu->EnableMenuItem (Index,MF_BYPOSITION | MF_ENABLED);

-prakash

romuzu1-Nov-05 18:46

romuzu

1-Nov-05 18:46

Thanks for the reply.

I did that before but still did not enable the menu.

Prakash Nadar1-Nov-05 20:06

how to use UML in my VC++ project?

1-Nov-05 20:06

romuzu wrote:
pMenu->ModifyMenu(Index, MF_BYPOSITION, MF_POPUP, GetTranslation( String ) );

I could not understand this function call and does not fit in any of the sig provided

did you mean
pMenu->ModifyMenu(Index, MF_BYPOSITION | MF_STRING,, GetTranslation( String ) );

-prakash

ewighell1-Nov-05 15:33

ewighell

1-Nov-05 15:33

I have got so many classes in my VC++ project that I feel they are very complicated. so I want to illustrate their relationship clearly with UML. is there any software can be used to draw a diagram of the relationship of these classes for me?

or, is there any other way to do this?
thank you very much!

-------------------
I am learning C++ and English

Re: how to use UML in my VC++ project?

Prakash Nadar1-Nov-05 15:41