C / C++ / MFC

Re: WM_MOUSEMOVE Child Window

20-Oct-05 8:11

Then you have to treat the event in the PreTranslateMassage() of the app class.

SkyWalker

TheJonzer20-Oct-05 10:00

TheJonzer

20-Oct-05 10:00

Hi -

I did this.

The best way to do it is to have the child window capture the mouse input and move itself.

MFC makes it easy to do. You can do it with a WIN32 API windProc - but it's more straight foward in MFC.

void myStatic::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
::SetCapture(*this) ;
::OutputDebugString("myStatic::OnLButtonDown\n") ;

mdown = 1 ;
m_x = point.x ;
m_y = point.y ;

// CStatic::OnLButtonDown(nFlags, point);
}

void myStatic::OnMouseMove(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
if( mdown )
{
::OutputDebugString("myStatic::OnMouseMove\n") ;

RECT lrect ;
::GetWindowRect(*this,&lrect) ;

point.x -= m_x;// modify the pt with the saved point
point.y -= m_y;

POINT lpt ;
lpt.x = lrect.left ;
lpt.y = lrect.top ;

::ScreenToClient(*this->GetParent(),&lpt) ;

lpt.x += point.x ;
lpt.y += point.y ;

::SetWindowPos( *this, 0, lpt.x, lpt.y, 0, 0, SWP_NOZORDER | SWP_NOSIZE );
}
// CStatic::OnMouseMove(nFlags, point);
}

void myStatic::OnLButtonUp(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
if( mdown )
{
mdown = 0 ;

::OutputDebugString("myStatic::OnLButtonUp\n") ;

::ReleaseCapture() ;
}

// CStatic::OnLButtonUp(nFlags, point);
}

- Joe

-- modified at 16:28 Thursday 20th October, 2005

CStatic derived class

cedric_craze20-Oct-05 4:04

cedric_craze

20-Oct-05 4:04

Hi,
I am developing and application that requires images manipulation.
All the interface is developped using Dialogs.
The controls were images are displayed are derived from CStatic control.
The problem is that I cannot catch the OnLButtonDown event straight in the CStatic control. I must catch the OnLButtonDown event in the dialog and then call the OnLButtonDown member function for each of my controls.

This doesn't happend with a CButton derived class.

I will apreciate any help.
Thank you.

Cédric

-- modified at 10:05 Thursday 20th October, 2005

Cedric Moonen20-Oct-05 4:15

Cedric Moonen

20-Oct-05 4:15

And why don't you make it a custom control instead ?

I never subclassed a CStatic control so I cannot answer your question but for me it looks like a custom control instead.

Mircea Puiu20-Oct-05 4:27

20-Oct-05 4:27

The CStatic control must have the SS_NOTIFY> style.
Check "Notify" within the "Style" properties tab.

SkyWalker

-- modified at 10:27 Thursday 20th October, 2005

cedric_craze20-Oct-05 5:32

cedric_craze

20-Oct-05 5:32

I already tried this but it didn't work!
I also tried to override the OnCreate member function but it is not called!
Thank's.

Mircea Puiu20-Oct-05 5:36

20-Oct-05 5:36

This cannot be Poke tongue | ;-P

Make a break point in the mouse button handler. Tell me if it goes there.
If not, I send you tomorrow a piece of code.

SkyWalker

cedric_craze20-Oct-05 5:48

cedric_craze

20-Oct-05 5:48

Sorry it worked!
I had a wrong statement in my OnLButtonDown(), and the break point was after!
The Notify style was the solution!

Thank you for your help!

writing an xml file.

swaapu20-Oct-05 1:47

swaapu

20-Oct-05 1:47

HI I don`t know how to write in an xml file through mfc. The whole file has to be written. Also, the file has to be created from mfc code. I am working on VS 6 in windows XP environment.

Thanx a lot

sunit520-Oct-05 2:45

sunit5

20-Oct-05 2:45

http://www.codeproject.com/soap/markupclass.asp

or u can use IXMLDOMocument
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/xmlsdk/html/39b17b9c-04c7-4fa8-bcee-1f7d57eefd74.asp

David Crow20-Oct-05 4:35

David Crow

20-Oct-05 4:35

Can you use the DOMDocument or IXMLDOMDocument2 interface?

"Take only what you need and leave the land as you found it." - Native American Proverb

sunit520-Oct-05 5:34

sunit5

20-Oct-05 5:34

http://www.codeproject.com/soap/markupclass.asp

in this article, after creating the xml,u can store the xml in a CString (CString csXML = xml.GetDoc();)

if u r creating the File using MFC ie CFile

char* ptoxml=csXML.GetBuffer(csXML.GetLength()+1);

CFile::Write((LPVOID)ptoxml,csXML.GetLength()+1);

duplicate nodes in tree view control

ThatsAlok20-Oct-05 19:23

ThatsAlok

20-Oct-05 19:23

as Sunit5 has mentioned MarkUp class is good alternative for writing and reading XML file but.. By My Personel Preferenc would you learn XMLDOM object ( if time permits you) other wise MARKUP class is good alternative

"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

QuickDeveloper20-Oct-05 1:45

QuickDeveloper

20-Oct-05 1:45

hi
I have TreeView Application which which appends tree nodes to the root at run time.the problem is that when v left click on the tree node label during run time it gets replicated.
eg: RootNode
--->sample1(these nodes are generated at run time)
--->sample2
......

if v click on sample2(eg) at run time it displays as follows
Rootnode
-->sample1
--->sample2
--->sample2
--->sample2
--->sample3
this problem occurs randomly without any particular series.

the code is as follows:

void CJobTreeCtrl::ProcessLeftBtnSelect(HTREEITEM mhtvClicked_Item, UINT nFlags, CPoint point)
{
SetFocus();

mhtvitmclicked = mhtvClicked_Item;

if (GetItemState(mhtvClicked_Item, TVIS_SELECTED) & TVIS_SELECTED)
{
mblnIsSelectPending = true;
mpntClick = point;
}
else
{
SelectMultiple(mhtvClicked_Item, nFlags);
mblnIsSelectPending = false;
}
}

how to rectify this

Thanx in advance

PJ Arends20-Oct-05 11:25

20-Oct-05 11:25

The only time an item will be added to the tree control is when you call InsertItem(). What I would do is do a search of your code for "InsertItem" and place a breakpoint by every line that you find. Then run your program. Just skip over the breakpoints (press F5) that you hit when the app starts. When your app is up and running click on an item in the tree control, the debugger should stop your app on the line that is calling InsertItem to duplicate the current item. Use the call stack to figure out how you got there from the click event.

HTH

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" - mYkel - 21 Jun '04

"There's not enough blatant self-congratulatory backslapping in the world today..." - HumblePie - 21 Jun '05

Within you lies the power for good - Use it!

QuickDeveloper20-Oct-05 22:43

QuickDeveloper

20-Oct-05 22:43

hi,

The problem i am facing with ur suggestion is i could not
click on the tree nodes being generated at run time while debugging.
As the nodes are appended at run time , i could only see the application for a split of second and i dont have the oppurtunity to click on tree nodes while debugging

PJ Arends20-Oct-05 23:16

20-Oct-05 23:16

Which is why I said "Just skip over the breakpoints (press F5) that you hit when the app starts. When your app is up and running click on an item in the tree control".

Just keep hitting F5 until the tree is populated. Then you can click on a node.

QuickDeveloper21-Oct-05 0:34

QuickDeveloper

21-Oct-05 0:34

hi,

I did exactly the way u said ,but the problem i'm facing is
once i start the run the nodes are being at run time.

the code is like this,

for(int i=0;i<ncount;i++)
{
="" strname="pDoc-">GetTraverseSpectralDataName(0,i);
TreeItem = m_treeCtrl->InsertItem(strName,5,5,m_hCS);
// kept my break point in the above line
m_treeCtrl->SetItemData(TreeItem,i);
}

now the corsor gets stuck in the for loop even is i press
F5 , my application appears for only a split of sec and
i could not have the chance of clicking on the samples (nodes)
as the nodes are generated continuously till the server stops.unless i click on the nodes at run time i could not find out why the duplicate sample(node) is being generated.

thanx for ur valuable suggestions

PJ Arends21-Oct-05 7:54

How to make scrolling marquee ?

21-Oct-05 7:54

vamshin wrote:
as the nodes are generated continuously till the server stops

What do you mean by "continously"? Do you mean that the loop runs once to fill the tree once at app startup (ie: adds say 1000 nodes and stops)? or do you mean that as long as the app is running, be it five minutes or five hours, there is always nodes being added to the tree? How about you change your code temporarily so that it only adds a few items (say 10) to the tree just to make debugging easier.

Amarelia20-Oct-05 1:45

Amarelia

20-Oct-05 1:45

Hi
I want to make scrolling marquee which scrolls from right to left horizontally in my dialog based MFC application.

I have used timer and at perticular interval I am showing my text again and again at few fixels ahead of last time i have shown.

But it creates problem when I make my font size very big e.g. Font height of 200.

I have also tried the CBannerStatic class given here in codeproject example. But it also gets very slow when I make my font very big.

Is there a way through which I can show big text font whith smoothly moving marquee.

Any idea any program will definitely help me.....

Thanking you

Amarelia Maehsh
Gujarat
India

Re: How to make scrolling marquee ?

Mircea Puiu20-Oct-05 4:30

Re: How to make scrolling marquee ?

20-Oct-05 4:30

I sent an image ticker to genaro picazo here at CP some time ago. Ask him,
or drop me an e-mail to send it also to you.

SkyWalker

PJ Arends20-Oct-05 11:29