Improve company productivity with a Business Account.Sign Up

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 1068
  • Last Modified:

Resize Property Page to fit bitmap (using SDK - not MFC)

Hello,

I am building a property page using Visual C++ Windows SDK (Non-MFC) and I want my property page to be bitmap based.  The only thing I want displayed int the Property Page display region is a bitmap and the program will respond to mouse movements and button control.  

The problem is that the Property Page is defined in a .rc file as a dialog as follows and as you see the size of the dialog is based on DIALOG UNITS although I would prefer to define the size in pixels so that it will exactly fit my bitmap:

IDD_MYPROPPAGE DIALOG DISCARDABLE  0, 0, 140, 180
STYLE WS_CHILD
FONT 8, "MS Sans Serif"
BEGIN
END

Since I cannot define the dialog in pixels, I guess I will need to resize it after it is created so that it is the proper size.  How can I do that?

Thanks,
Mark
0
kaplan1
Asked:
kaplan1
  • 2
1 Solution
 
Roshan DavisCommented:
Displays the settings for the grid spacing in dialog box units (DLUs).

Width: DLUs
Sets the width of the layout grid in DLUs. A horizontal DLU is the average width of the dialog box font divided by four.
Height: DLUs
Sets the height of the layout grid in DLUs. A vertical DLU is the average height of the dialog box font divided by eight


MSDN SAYS:

BOOL CMyDlg::OnInitDialog()
{
    CDialog::OnInitDialog();

    // Set tabstops at 100 and 200 dialog units
    int tab_stop[2] = {100, 200};
    VERIFY(m_listbox.SetTabStops(2, tab_stop));

    m_listbox.AddString("String1\tString2\tString3");

    CDC *pDC = m_listbox.GetDC();

    // Get a handle to the font used in the list box
    CFont *pFont;
    pFont = m_listbox.GetFont();

    // Select the list box font into the temporary DC
    CFont *pFontOld = pDC->SelectObject(pFont);

    // Call GetTextExtentPoint to compute the string dimensions
    // NOTE: use GetTextExtentPoint32 in Win32 for better results
    CSize size;
    GetTextExtentPoint(pDC->GetSafeHdc(),
      "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",
      52, &size);

    int avg_char_width = (size.cx/26 +1)/2;

    // Restore Original Font
    pDC->SelectObject(pFontOld);

    m_listbox.ReleaseDC(pDC);

    // Convert DLU to pixel positions
    int xPos1 = (tab_stop[0] * avg_char_width + 2)/4;
    int xPos2 = (tab_stop[1] * avg_char_width + 2)/4;
...........
}

GOOD LUCK
0
 
kaplan1Author Commented:
What I am trying to accomplish is to set the dialog box associated with my Property page to be an exact height and width of pixels.  Since the dialog definition in the .rc file is in DLU's which seem to be user dependent (depends on users screen resolution) I don't think I can set it there.  Therefore I assume I must resize the dialog box at runtime to the exact pixel dimensions that I want.  Is this possible, and if so how?

Thanks,
Mark
0
 
fl0ydCommented:
This is possible. Use the SetWindowPos()-function and specifiy ( SWP_NOMOVE | SWP_NOREPOSITION | SWP_NOZORDER ) as your flags. All window/display-functions take actual pixel dimensions, with one exception: printing.
0
 
kaplan1Author Commented:
I tried using SetWindowPos() but nothing happened.  That is probably because the dialog box of the Property Page is a child of the outer TabCtrl.  
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Featured Post

Get 10% Off Your First Squarespace Website

Ready to showcase your work, publish content or promote your business online? With Squarespace’s award-winning templates and 24/7 customer service, getting started is simple. Head to Squarespace.com and use offer code ‘EXPERTS’ to get 10% off your first purchase.

  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now