C / C++ / MFC Discussion Boards

Re: Socket Communications - buffering problems

Joaquín M López Muñoz17-Dec-01 9:05

17-Dec-01 9:05

I'd say buffering has nothing to do with your problem. It rather seems like program #2 is blocking on Receive due to lack of data from program #1, and unblocks after some timeout.
It'd be great if you can post the write and read loops of your two programs to help determine what's going on.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Hatched Brushes + a Scrolling View = Wacky Lines

D.D. de Kerf17-Dec-01 5:15

D.D. de Kerf

17-Dec-01 5:15

Hi,

I've written a document-view-application which draws boxes with fillings. I draw the fillings using a CRect and filling that with a hatched brush (HS_BDIAGONAL, HS_CROSS and so forth)....

All works well until I start scrolling. It looks as if the view just draws the part of the document in the view that was invisible, but became visible because of the scroll... It also looks as though the brush's origin just takes the first visible point to start drawing instead of really using the coordinates of the rect it fills (because the top part of the box was, at the time, outside the viewport)...

This results into wacky lines like this picture:
http://hioforum.ftn.hsbrabant.nl/data/wacky_lines.jpg

Any idea of how to fix this? I don't like rewriting to code to manually drawing the lines, but of course it is an option....

Structured programming vs. chaotic mind boggling

Re: Hatched Brushes + a Scrolling View = Wacky Lines

Joaquín M López Muñoz17-Dec-01 5:29

Joaquín M López Muñoz

17-Dec-01 5:29

GDI is something I know close to zero about, but seems like SetBrushOrgEx is what you're looking for.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

MAXIMIZE A DIALOG

jafrazee17-Dec-01 4:42

jafrazee

17-Dec-01 4:42

I have created a mdi application. when the program starts it opens a child dialog. but i can not get it to maximize to the parent window. i have tried placing wm_maximize in the create string for the dialog and in the oninitialupdate call showwindows(sw_maximize) both results give me a window about 75% of the parents size.

thank you for any insite.

Re: MAXIMIZE A DIALOG

Ernest Laurentin17-Dec-01 5:14

Ernest Laurentin

17-Dec-01 5:14

Try this, I didn't try it but should work.

CYourDlg::OnInitDialog()
{
    CDialog::OnInitDialog();
    // Get main window size and resize your window...
    CRect rc;
    AfxGetMainWnd()->GetWindowRect(rc);
    ScreenToClient(rc);
    SetWindowPos(NULL, rc.left, rc.top, rc.Width(), rc.Height(), SWP_NOZORDER);
}

- God bless the World

Re: MAXIMIZE A DIALOG

Eugene Pustovoyt17-Dec-01 8:25

Eugene Pustovoyt

17-Dec-01 8:25

Hello!

That's easy!

1. Overlapped the ActivateFrame method of the CChildFrame.
2. Add bold string to this method:

void CChildFrame::ActivateFrame(int nCmdShow)
{
	nCmdShow = SW_SHOWMAXIMIZED;
	CMDIChildWnd::ActivateFrame(nCmdShow);
}

That's all, Bye

Eugene Pustovoyt
Roll eyes | :rolleyes:

Sonork ID 100.10002:Yaumen

Re: MAXIMIZE A DIALOG

jafrazee17-Dec-01 9:58

jafrazee

17-Dec-01 9:58

very easy thank you.

CalcWindowRect for CFrameWnd

17-Dec-01 4:38

CalcWindowRect for CFrameWnd

Hi, in MFC the class CFrameWnd do not have it's own implementation
of the virtual function CalcWindowRect. I need a CalcWindowRect which
given a certain-sized client rectangle, adds the heights and widths
of all the toolbars, menus, window frames, scrollbars and status bars.
Did I forget something? Have anyone already written one for lazy me
I could use?

Otherwise, I guess I have to do it myself. Anyone knows how to calculate
the height of the status bar? The following code do not work,
nStatusbarHeight is zero afterwards, however the status bar works fine,
I can update the text of the pane with index ID_INDICATOR_CAPS for example.

CRect rect;
m_wndStatusBar.GetItemRect(ID_INDICATOR_CAPS, rect);
int nStatusbarHeight = rect.Height();

Thanks for all input, Patric

Re: CalcWindowRect for CFrameWnd

Michael Dunn17-Dec-01 7:28

Michael Dunn

17-Dec-01 7:28

From your description, it sounds like you're looking for the size of the entire window, including nonclient areas. Use GetWindowRect() for that.

--Mike--
My really out-of-date homepage
"Not our fault we are intellectually superior to the rest of the office." -- Paul Watson in the Lounge, 12/12/2001
Sonork - 100.10414 AcidHelm
Big fan of Alyson Hannigan.

Re: CalcWindowRect for CFrameWnd

17-Dec-01 8:14

I am interested in the size of the entire window, however not it's
current size. I want the application to set its own size. I know
the view's size. Now I want to set the size of my frame object, CMainFrm, so it is perfectly fits the view, with toolbars and everything. Therefore I need a CalcWindowRect for CFrameWnd.

/Patric

Re: CalcWindowRect for CFrameWnd

Joaquín M López Muñoz17-Dec-01 8:27

Joaquín M López Muñoz

17-Dec-01 8:27

Maybe I'm totally missing your point, but I use the following snippet of code to adjust the frame's size to that of a CFormView (in CYourView::OnInitialUpdate)

GetParentFrame()->RecalcLayout();
ResizeParentToFit(FALSE);

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: CalcWindowRect for CFrameWnd

17-Dec-01 17:34

OK, this was what I wanted, I looked into
CScrollView::ResizeParentToFit and ripped
some code, simplifyied it and put in my
view's OnInitialUpdate. It was easier than
implementing a CalcWindowRect in the mainframe
class.

/Patric

// Remove scroll bars.
SetScrollSizes(MM_TEXT, CSize(0, 0));
GetParentFrame()->RecalcLayout();
// Get the view's current size.
CRect rectViewCurrent;
GetClientRect(rectViewCurrent);
// Get the frame's current size.
CRect rectFrame;
GetParentFrame()->GetWindowRect(rectFrame);
// Calculate the needed space for toolbars, caption, statusbars and borders by
// subtracting the view's size from the frame's. Then calculate the desired size
// for the frame by adding rectsize to it.
CSize size;
size.cx = rectSize.Width() + rectFrame.Width() - rectViewCurrent.Width();
size.cy = rectSize.Height() + rectFrame.Height() - rectViewCurrent.Height();
// Finally, lets change the size of the frame to the one we want.
GetParentFrame()->SetWindowPos(NULL, 0, 0, size.cx, size.cy,

powerpoint automation problem

Kuniva17-Dec-01 4:05

Kuniva

17-Dec-01 4:05

I'm trying to automate powerpoint(with a type library) so i can open a file in powerpoint from my app but it wont work, here's what i have:

Presentations pf;
CString file;
file = "C:\\My Documents\\Afwezigheden.ppt";
pf.Open(file,FALSE,TRUE,TRUE);

Can anyone tell me why it wont work?
(BTW everything else works, i can start powerpoint)

Kuniva

Convert Calender !

Hadi Rezaee17-Dec-01 3:48

Hadi Rezaee

17-Dec-01 3:48

Hi,
How can i change English Date to Hijri Calender(Date) ?
Confused | :confused:

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

Re: Convert Calender !

Rashid Thadha17-Dec-01 4:12

Rashid Thadha

17-Dec-01 4:12

There are various algorithms that do this

I came across this one, It may help you

http://www.codearchive.com/newcode/comments/comments.cgi?section=c&codenumber=1612

Re: Convert Calender !

Hadi Rezaee17-Dec-01 5:21

Hadi Rezaee

17-Dec-01 5:21

Thanks Mr.Rashid,
Your help was useful Big Grin | :-D

With Best Regards

My month article: Game programming by DirectX by Lan Mader.
Please visit in: www.geocities.com/hadi_rezaie/index.html

Hadi Rezaie

how to read ChooseColor() selection without exiting the dialog

17-Dec-01 3:31

When using Win32 ChooseColor() function, how can I read currently selected color without leaving the color dialog (i.e. before ChooseColor function exits) ?

control a downloaded activex control

SAWilde17-Dec-01 2:40

SAWilde

17-Dec-01 2:40

I have an activeX control that I have tested and signed - however I have discovered
that I can download the control from a web page that is on a different site to the control (.cab)

Is there a way of marking the control so that it cannot be 'borrowed' by another site ?

Holy Handgrenade of Antioch instructions

Re: control a downloaded activex control

Todd.Harvey18-Dec-01 9:07

Todd.Harvey

18-Dec-01 9:07

there's some licensing you can do - for example, the MSHFlexGrid (in Visual Studio etc) is a licensed control - there is a special procedure that must be gone through to use it on a machine that does not have VB or Visual Studio installed. I don't know how to license a control, but I do have experience with this particular control and the hoops we had to do to get it to work. (on a pc that had not had the licensing procedure run, it displays as a blank box)

Re: control a downloaded activex control

SAWilde19-Dec-01 0:01

SAWilde

19-Dec-01 0:01

thanks - I did look at licensing but I couldn't see how it would stop anyone from using the control x-domains - I eventually implemented something via IObjectWithSite - to get the URL that the control was working under and then check to see if the url domain was one I allow access to

Holy Handgrenade of Antioch instructions

How to use Custom Resources

Jon Hulatt17-Dec-01 1:41

Jon Hulatt

17-Dec-01 1:41

Hi.

My program needs a block of binary data to work. I do not want this binary data in a separate file because it is a) unchanging and b) i want minimal dependancies.

I've created a custom resource in resource editor and put my binary data in there.

I want to get a (BYTE *) pointer to this data at run time. The only method i've found of doing that up to now is this:

BYTE *p_SREData;
HGLOBAL hGlobal; HRSRC hRSrc;

hRSrc=FindResource(NULL, MAKEINTRESOURCE(IDR_DATA1),RT_RCDATA);
hGlobal=LoadResource(NULL, hRSrc);
p_SREData=(BYTE *) LockResource(hGlobal);

Whilst this works, surely there's a better, simpler way of getting the data?

And MSDN for LockResource states that the system frees allocated memory upon program termination, but you can free the memory manually when you no longer need it by calling one of the functions. But it's not obvious which function to use for a custom binary resource. Any ideas?

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: How to use Custom Resources

Ernest Laurentin17-Dec-01 4:36

Ernest Laurentin

17-Dec-01 4:36

Actually there is a faster way to do this. If you define your custom resource as for example
a "BINARY" data (Insert Resource->Custom (button) ->"BINARY" without quotes).
I always defined custom resource as binary anyway but give it the name you want...
Fastest way to get the data in my opinion is this:
// LPCTSTR lpszName = MAKEINTRESOURCE( idr_your_resource_id );
// LPCTSTR lpszType = _T("BINARY");
// HINSTANCE hRes = AfxGetResourceHandle();

BYTE* GetResourceData(LPCTSTR lpszName, LPCTSTR lpszType, HINSTANCE hRes)
{
   HRSRC res = ::FindResource(hRes, lpszName, lpszType);
   ASSERT( res != NULL);
   BYTE* pBytes = (BYTE*) LockResource(LoadResource(hRes, res ));
   ASSERT( pBytes != NULL);
   return pBytes;
}

Help with multi-column ListBox

Eugene Pustovoyt17-Dec-01 1:23

Eugene Pustovoyt

17-Dec-01 1:23

Hello everybody!

I have a little problem, help me please!

1. I'm create the listbox with multi-column style
2. I'm set the Width of ListBox (SetColumnWidth)

How can I add string to the second column, third column and etc?

Best regards,
Eugene Pustovoyt
Confused | :confused:

Sonork ID 100.10002:Yaumen

Re: Help with multi-column ListBox

17-Dec-01 2:23

You should use:
BOOL SetItem( int nItem, int nSubItem, UINT nMask, LPCTSTR lpszItem, int nImage, UINT nState, UINT nStateMask, LPARAM lParam );

The nItem is the line and the nSubItem is the column:
SetItem(102,2,0,"Second Colum",0,0,0,0);

Re: Help with multi-column ListBox

Eugene Pustovoyt17-Dec-01 2:50

Eugene Pustovoyt

17-Dec-01 2:50

But SetItem method is a member of the CListCtrl class and not member CListBox.

I want made multi-column from CListBox!

Sonork ID 100.10002:Yaumen

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.