C / C++ / MFC

10-Apr-06 1:11

Hi all,
We have a class CBitmapButton which is derived from cButton. We need to enable the tool tip for this class. We have written the code for the same.
We have followed all the steps required to enable a tool tip for this button. However we are facing a problem while displaying the tool tip. The tool tip is seen at first when the mouse is moved to this button. If we hold the mouse on that button, after some time, the tool tip vanishes and then the tool tip is never seen even if the mouse is moved to the next button and brought back to this button .
Please suggest some solution to the above problem.
Any kind of help would be appreciated.
Thanks

amit

Ganesh_T10-Apr-06 1:28

Ganesh_T

10-Apr-06 1:28

can you give he short code snippet what you are doing so that someone can find out where you are gong wrong

Cheers
"Peace of mind through Technology"

Laxman Auti10-Apr-06 1:40

Laxman Auti

10-Apr-06 1:40

Hey man,

Here is some code that will definatly help you

http://www.codeproject.com/buttonctrl/hoverbutton.asp

Knock out "T" from CAN'T
You 'CAN' if you think you 'CAN'
Cool | :cool:

amitgpatil@gmail.com10-Apr-06 23:12

10-Apr-06 23:12

Hi all,

Thanks for the help. I tried the following things one by one and checked the output
1. Capture the mouse event and used TrackMouseEvent
2. Called InitToolTip function in PreTranslate before RelayEvent
3. Set the flag to TTF_SUBCLASS while creating the tool tip control.

However, I am still not getting the tool tip after the time out.
I shall post my code in a short while. Please look at it and let me know what is wrong in it

Thanks again for the help provided.

Regards,

amit

amitgpatil@gmail.com11-Apr-06 0:03

11-Apr-06 0:03

Given below are the steps for enabling the tool tip for the CBitmapButton
1. The class CTipBitmapButton is derived from CButton. This has teh owner's draw property set to TRUE.
2. An object of CToolTipCtrl m_ToolTipCtrl is created.
3. m_ToolTipCtrl is initialised in the constructor
4. The tool tip is initialised by using following code:
m_ToolTipCtrl = new CToolTipCtrl;
m_ToolTipCtrl->Create(this);
m_ToolTipCtrl->Activate(TRUE);
m_ToolTipCtrl->SetFont(GetFont(), FALSE);
5. New function DisplayToolTip is called in the DrawItem function of the class CTipBitmapButton
6. The function DisplayToolTip has the following code
a. Delete the tool tip if it exists
b. Set the tool tip using SetToolTipText function
c. Set the delay time to TTDT-INITIAL
7. The function SetToolTipText has the following code
a. Initialise the tool tip
b. If the tooltip tool count is 0, then m_ToolTipCtrl->AddTool(this, rect, 1)
c. m_ToolTipCtrl->UpdateTipText(tooltext,this,1)
d. m_ToolTipCtrl->Activate(TRUE);
8. In PreTranslateMessage
m_ToolTipCtrl->RelayEvent(pMsg);

With this code, the tool tip does not come after the time out. Please suggest.

Any kind of help would be appreciated.
Thanks,

amit

amitgpatil@gmail.com11-Apr-06 0:05

11-Apr-06 0:05

Given below are the steps for enabling the tool tip for the CBitmapButton
Please note that this code is the original code written before trying out options of TrackMouseEvent and TTF_SUBCLASS

1. The class CTipBitmapButton is derived from CButton. This has teh owner's draw property set to TRUE.
2. An object of CToolTipCtrl m_ToolTipCtrl is created.
3. m_ToolTipCtrl is initialised in the constructor
4. The tool tip is initialised by using following code:
m_ToolTipCtrl = new CToolTipCtrl;
m_ToolTipCtrl->Create(this);
m_ToolTipCtrl->Activate(TRUE);
m_ToolTipCtrl->SetFont(GetFont(), FALSE);
5. New function DisplayToolTip is called in the DrawItem function of the class CTipBitmapButton
6. The function DisplayToolTip has the following code
a. Delete the tool tip if it exists
b. Set the tool tip using SetToolTipText function
c. Set the delay time to TTDT-INITIAL
7. The function SetToolTipText has the following code
a. Initialise the tool tip
b. If the tooltip tool count is 0, then m_ToolTipCtrl->AddTool(this, rect, 1)
c. m_ToolTipCtrl->UpdateTipText(tooltext,this,1)
d. m_ToolTipCtrl->Activate(TRUE);
8. In PreTranslateMessage
m_ToolTipCtrl->RelayEvent(pMsg);

With this code, the tool tip does not come after the time out. Please suggest.

Any kind of help would be appreciated.
Thanks,

amit

amitgpatil@gmail.com11-Apr-06 0:44

11-Apr-06 0:44

Hi all,
I am sending you the code snippet i have written.
Hope you will get better idea with this.

Given below are the steps for enabling the tool tip for the CBitmapButton
1. The class CTipBitmapButton is derived from CButton. This has teh owner's draw property set to TRUE.
2. An object of CToolTipCtrl m_ToolTipCtrl is created.
3. m_ToolTipCtrl is initialised in the constructor
4. The tool tip is initialised by using following code:
m_ToolTipCtrl = new CToolTipCtrl;
m_ToolTipCtrl->Create(this);
m_ToolTipCtrl->Activate(TRUE);
m_ToolTipCtrl->SetFont(GetFont(), FALSE);
5. New function DisplayToolTip is called in the DrawItem function of the class CTipBitmapButton
6. The function DisplayToolTip has the following code
a. Delete the tool tip if it exists
b. Set the tool tip using SetToolTipText function
c. Set the delay time to TTDT-INITIAL
7. The function SetToolTipText has the following code
a. Initialise the tool tip
b. If the tooltip tool count is 0, then m_ToolTipCtrl->AddTool(this,
rect, 1)
c. m_ToolTipCtrl->UpdateTipText(tooltext,this,1)
d. m_ToolTipCtrl->Activate(TRUE);
8. In PreTranslateMessage
m_ToolTipCtrl->RelayEvent(pMsg);

With this code, the tool tip does not come after the time out. Please suggest.

amit

James R. Twine10-Apr-06 2:43

James R. Twine

10-Apr-06 2:43

   If you are manually passing mouse movement messages to the tooltip, be sure that you are doing it from the parent window of the CBitmapButton, and not from the button control itself, or use _TrackMouseEvent(...) to indicate to the tooltip control when you have moved off of the button (send it a POP message).

   My guess is that the tooltip is not getting messages when you move off of the control, so it still thinks the mouse is over the button (standing still), and will not reset its state to display itself again.

   Alternately, you could use a little-known (or little-used) feature of the ToolTip control, the TTF_SUBCLASS flag when creating the tooltip to implement "fire-and-forget" tooltip support, where you do not have to handle passing messages around.

   Peace!

-=- James

If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
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Hamid_RT10-Apr-06 3:46

Hamid_RT

10-Apr-06 3:46

Hi amitgpatil@gmail.com,

if you need to Tooltip maybe it is some helpful to you
http://www.codeproject.com/script/comments/forums.asp?msg=1433824&forumid=1647&Page=2&userid=2304071&mode=all#xx1433824xx[^]

monitoring registry

kiranin10-Apr-06 0:33

kiranin

10-Apr-06 0:33

how can i monitor all register sub keys in the selected root regiter key.
and display the register key name,value ans status in list control.
how can i do it?

Naveen10-Apr-06 0:36

Naveen

10-Apr-06 0:36

If u r looking for a utility chck here
http://www.sysinternals.com/Utilities/Regmon.html[^]

nave

Ganesh_T10-Apr-06 0:39

Ganesh_T

10-Apr-06 0:39

You can use :

char lszValue[255];
CString str ;
HKEY hKey;
LONG returnStatus;
DWORD dwType=REG_SZ;
DWORD dwSize=255;
returnStatus = RegOpenKeyEx(HKEY_LOCAL_MACHINE, "Key path separeted by \\", 0L, KEY_ALL_ACCESS, &hKey);
if (returnStatus == ERROR_SUCCESS)
{
returnStatus = RegQueryValueEx(hKey,"value you want to read", NULL, &dwType,(LPBYTE)&lszValue, &dwSize);
if(returnStatus == ERROR_SUCCESS)
{
str = (LPCTSTR)lszValue;
}
}
RegCloseKey(hKey);

Cheers
"Peace of mind through Technology"

David Crow10-Apr-06 2:29

David Crow

10-Apr-06 2:29

kiranin wrote:
how can i monitor all register sub keys in the selected root regiter key.

By using RegNotifyChangeKeyValue().

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

kiranin13-Apr-06 0:19

kiranin

13-Apr-06 0:19

Plz Can U explain the procedure......how i willl do it.?

Re: howto insert a control inside of a groupbox

David Crow13-Apr-06 2:27

David Crow

13-Apr-06 2:27

See here.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

David Crow10-Apr-06 2:30

David Crow

10-Apr-06 2:30

PabloN wrote:
...when i move my groupbox the radio button won't.

This is normal behavior with VS v6. Has that changed with VS 2005?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

how come this happen? thank you

ewighell10-Apr-06 0:31

ewighell

10-Apr-06 0:31

I build a dialog based MFC program.

in the file "StdAfx.h" I add the following code,which is used to define a global variable of type CString.

#ifndef jjjjjjjjjjjjjjjjjjj
#define jjjjjjjjjjjjjjjjjjj
CString StrGlobal;
#endif

and then I use it in another file "newfile.cpp"

#include "stdafx.h"
extern CString StrGlobal;
void fun()
{
   StrGlobal = _T("KDKDK");
}

when I build the program, following link error shows up:

Linking...
StdAfx.obj : error LNK2005: "class CString StrGlobal" (?StrGlobal@@3VCString@@A) already defined in newfile.obj

why dose this happen? and how can I fix it ?

Thank you very much!!!

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

Re: how come this happen? thank you

Stephen Hewitt10-Apr-06 13:44

Stephen Hewitt

10-Apr-06 13:44

You've got the extern in the wrong file: It should be in the .h file.

Steve

how come this happen? thank you very much

ewighell10-Apr-06 0:25

ewighell

10-Apr-06 0:25

I build a dialog based MFC program.

in the file "StdAfx.h" I add the following code,which is used to define a global variable of type CString.

#ifndef jjjjjjjjjjjjjjjjjjj
#define jjjjjjjjjjjjjjjjjjj
CString StrGlobal;
#endif

and then I use it in another file "newfile.cpp"

#include "stdafx.h"
extern CString StrGlobal;
void fun()
{
   StrGlobal = _T("KDKDK");
}

Naveen10-Apr-06 0:33

Naveen

10-Apr-06 0:33

move the declaration
CString StrGlobal; to stdafx.cpp or make the varaiable static

nave

ewighell10-Apr-06 1:08

ewighell

10-Apr-06 1:08

yes, I make it static and it works. thank you so much.
but ,could you please explain to me briefly the reason?

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

Naveen10-Apr-06 1:22

Naveen

10-Apr-06 1:22

The .h file might have been include by multiple cpp file. so while compiling , the variable will be present in the vtable of obj file corresponding to each cpp. so while linking, linker will find multiple object and generates the error since it dosen't know to which obj it have to link.

nave