... Converting from Twips to Pixels ? ...

Hello everybody,

I'm using the MSFlexGridControl with MFC, and when i click on a cell, i move
a CEdit box to the position.

The problem is :

When i get the position and dimension of the selected Cell (Width,Height), i
have the values in Twips ...

-> How to convert that dimension in Pixels ?

in VB we have :

Screen.TwipsPerPixelX
Screen.TwipsPerPixelY

But in C++ ? Do I have to use the CDC of the control or something like that
??

I'm really lost ... Thank's for any help.

Driss.

[Brian Preston]

CDC::GetDeviceCaps() is what you are looking for.

It would go something like this if you were moving a CEdit.

CRect rect;
CDC* pDC = GetDC();
int pixelsX = pDC->GetDeviceCaps(LOGPIXELSX);
int pixelsY = pDC->GetDeviceCaps(LOGPIXELSY);
m_Grid.GetWindowRect(&rect);
ScreenToClient(&rect);

m_Edit.MoveWindow(m_Grid.GetCellLeft()* pixelsY/1440 + rect.left,
m_Grid.GetCellTop() * pixelsY/1440 + rect.top,
m_Grid.GetCellWidth() * pixelsY/1440,
m_Grid.GetCellHeight() * pixelsY/1440, TRUE);
m_Edit.SetFocus();

Brian

<ndriss@club-internet.fr> wrote:
>Hello everybody,
>
>I'm using the MSFlexGridControl with MFC, and when i click on a cell, i
move
>a CEdit box to the position.
>
>The problem is :
>
>When i get the position and dimension of the selected Cell (Width,Height),
i
>have the values in Twips ...
>
>-> How to convert that dimension in Pixels ?
>
>in VB we have :
>
>Screen.TwipsPerPixelX
>Screen.TwipsPerPixelY
>
>But in C++ ? Do I have to use the CDC of the control or something like that
>??
>
>I'm really lost ... Thank's for any help.
>
>Driss.
>
>

Thank's a lot, i'm going to try it right now ...

Driss.

"Brian Preston" <brian81@yahoo.com> a écrit dans le message news:
3b17f330$1@news.devx.com...
>
>
> CDC::GetDeviceCaps() is what you are looking for.
>
> It would go something like this if you were moving a CEdit.
>
> CRect rect;
> CDC* pDC = GetDC();
> int pixelsX = pDC->GetDeviceCaps(LOGPIXELSX);
> int pixelsY = pDC->GetDeviceCaps(LOGPIXELSY);
> m_Grid.GetWindowRect(&rect);
> ScreenToClient(&rect);
>
> m_Edit.MoveWindow(m_Grid.GetCellLeft()* pixelsY/1440 + rect.left,
> m_Grid.GetCellTop() * pixelsY/1440 + rect.top,
> m_Grid.GetCellWidth() * pixelsY/1440,
> m_Grid.GetCellHeight() * pixelsY/1440, TRUE);
> m_Edit.SetFocus();
>
> Brian
>
> <ndriss@club-internet.fr> wrote:
> >Hello everybody,
> >
> >I'm using the MSFlexGridControl with MFC, and when i click on a cell, i
> move
> >a CEdit box to the position.
> >
> >The problem is :
> >
> >When i get the position and dimension of the selected Cell
(Width,Height),
> i
> >have the values in Twips ...
> >
> >-> How to convert that dimension in Pixels ?
> >
> >in VB we have :
> >
> >Screen.TwipsPerPixelX
> >Screen.TwipsPerPixelY
> >
> >But in C++ ? Do I have to use the CDC of the control or something like
that
> >??
> >
> >I'm really lost ... Thank's for any help.
> >
> >Driss.
> >
> >
>

Thank's Brian, it works very well !

I had written so many and complicated codes with no success,
and yours are 3 times shorter and really more simple !

Thank's.

Driss


"Brian Preston" <brian81@yahoo.com> a écrit dans le message news:
3b17f330$1@news.devx.com...
>
>
> CDC::GetDeviceCaps() is what you are looking for.
>
> It would go something like this if you were moving a CEdit.
>
> CRect rect;
> CDC* pDC = GetDC();
> int pixelsX = pDC->GetDeviceCaps(LOGPIXELSX);
> int pixelsY = pDC->GetDeviceCaps(LOGPIXELSY);
> m_Grid.GetWindowRect(&rect);
> ScreenToClient(&rect);
>
> m_Edit.MoveWindow(m_Grid.GetCellLeft()* pixelsY/1440 + rect.left,
> m_Grid.GetCellTop() * pixelsY/1440 + rect.top,
> m_Grid.GetCellWidth() * pixelsY/1440,
> m_Grid.GetCellHeight() * pixelsY/1440, TRUE);
> m_Edit.SetFocus();
>
> Brian
>
> <ndriss@club-internet.fr> wrote:
> >Hello everybody,
> >
> >I'm using the MSFlexGridControl with MFC, and when i click on a cell, i
> move
> >a CEdit box to the position.
> >
> >The problem is :
> >
> >When i get the position and dimension of the selected Cell
(Width,Height),
> i
> >have the values in Twips ...
> >
> >-> How to convert that dimension in Pixels ?
> >
> >in VB we have :
> >
> >Screen.TwipsPerPixelX
> >Screen.TwipsPerPixelY
> >
> >But in C++ ? Do I have to use the CDC of the control or something like
that
> >??
> >
> >I'm really lost ... Thank's for any help.
> >
> >Driss.
> >
> >
>