windows messages - C / C++ / MFC Discussion Boards

Re: print pdf without Acrobat.

l a u r e n16-Sep-02 10:46

l a u r e n

16-Sep-02 10:46

php has some libs for doin this i think but im not sure if they work ok or whatnot

"... and so i said to him ... if it don't dance (or code) and you can't eat it either f**k it or throw it away"
what i do who i am

Re: print pdf without Acrobat.

Anonymous16-Sep-02 13:39

Anonymous

16-Sep-02 13:39

There are several companies that make PDF libraries that you can use. The only one I have experience with is Zeon (http://www.zeon.com.tw). It does a pretty good job printing, although they render everything as GDI, so Postscript printers don't work as well as they should. They also have a great library for building PDFs that is very similar to Adobe's now-discontinued PDFLib.

I understand there are several open source projects to build similar things, but I haven't spent much time evaluating them.

Placing Icons on a CStatic-derived class

MightyThor16-Sep-02 7:23

MightyThor

16-Sep-02 7:23

Hi,

I have a class derived from CStatic. When cursor is over the control i want the text to change color. To manage this i had override OnPaint. It works fine but the problem is i also want this control to be capable of displaying icons.

I tried the following code but it didn't work:

if( m_hIcon )
{
CStatic::SetIcon( m_hIcon ); (Line 1)
}
else
{
// If no icon is specified just draw the text
dc.DrawText( str, str.GetLength(), rect,
DT_CENTER | DT_VCENTER | DT_SINGLELINE );
}

m_hIcon, is spcified by user by the overriden SetIcon method:

HICON CTableTextStatic::SetIcon(HICON hIcon)
{
m_hIcon = hIcon;
return m_hIcon;
}

Can you tell me what am i doing wrong here?

I also tried replacing "Line 1" above with the below:

dc.DrawIcon( rect.Width() / 2, 0, m_hIcon );

It works but i want the icon to be centered and i couldn't find a way to get icon's size.
And with this way, it draws the icon even if SS_ICON style is not specified. Does that mean using DrawIcon is not a nice way to do it?

Sorry for the long post. It would be great if you could help me on this one.

Thank you in advance.

Re: Placing Icons on a CStatic-derived class

Joaquín M López Muñoz16-Sep-02 9:27

Joaquín M López Muñoz

16-Sep-02 9:27

I cannot try it right now, but maybe modyfing the style of the control will work:

if(m_hIcon){
  ModifyStyle(0,SS_ICON);
  //as before
}
else{
  ModifyStyle(SS_ICON,0);
  //as before
}

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Placing Icons on a CStatic-derived class

MightyThor16-Sep-02 10:10

MightyThor

16-Sep-02 10:10

Thanks for replying and sorry for not mentioning the line i created the control:

<br />
CTableTextStatic *pSta = new CTableTextStatic;<br />
pSta->Create( "Test", WS_CHILD | WS_VISIBLE | WS_THICKFRAME | SS_ICON | SS_CENTERIMAGE | SS_NOTIFY, CRect( 525, 100, 650, 125 ), this, 12654 ); <br />
pSta->SetIcon( AfxGetApp()->LoadIcon( IDR_MAINFRAME ) );<br />

So I already declared its style to display icons.

For drawing the icon, there are some nice methods of CDC class such as StrechBlt but instead of HICON i am allowed to use HBITMAP.

Re: Placing Icons on a CStatic-derived class

MightyThor17-Sep-02 7:00

MightyThor

17-Sep-02 7:00

I solved my problem. In case, in the future someone faces the same problem i decided to write how i solved it:

Instead of using DrawIcon method of CDC, i used DrawIconEx.

if( m_hIcon )
{
::DrawIconEx(	dc.m_hDC, 
		( rect.Width() / 2 - m_nIconWidth / 2 ), 
		( rect.Height() / 2 - m_nIconHeight / 2), 
 	        m_hIcon,
		m_nIconWidth, 
		m_nIconHeight, 
		NULL, 
		NULL,
		DI_IMAGE );
}
else
{	
   if( str )
   {
	dc.DrawText( str, str.GetLength(), rect, DT_CENTER  
             | DT_VCENTER | DT_SINGLELINE );
   }
}

and SetIcon function

void CTableTextStatic::SetIcon(HICON hIcon, int width, int height)
{
	m_hIcon = hIcon;
	m_nIconWidth = width;
	m_nIconHeight = height;
}

This way, i can specify any size for icon and it resizes( stretches or compresses) the icon automatically. And it draws centered.

How to use webdings on a button

Max Santos16-Sep-02 6:55

Max Santos

16-Sep-02 6:55

I want to use some of the symbols of the font webdings or wingdings on a button, I can change the font of the button to all the outhers but no to this ones

anyone knows why?

Casa.Sapo.pt

windows messages

Zizilamoroso16-Sep-02 6:28

Zizilamoroso

16-Sep-02 6:28

I've seen somebody doing this:

switch(msg)
  { case WM_INITDIALOG:
    { // do something
      return TRUE;
    }
    `:
    { int id=LOWORD(wParam);
      if (id==IDOK)
      { // do something
      }
      if (id==IDOK || id==IDCANCEL) EndDialog(hwnd,id);
    } break;
  }

What I don't understand is the `:. My visual studio can't compile it, unrecognized patati patata...
What does the programmer mean by it?

[VISUAL STUDIO 6.0] [MFC] [WIN98/2]

Re: windows messages

Mike Nordell16-Sep-02 6:33

Mike Nordell

16-Sep-02 6:33

You are dreaming. You have never seen anyone do anything like that since it's illegal code.

Maybe you have seen some one do it with "ticks" (') added round the "back-tick" or in a web-page that for some reason f***ed it up, or for a WM_CHAR with ESC (ASCII 27, which obviously can't be displayed)?

But again, you have _never_ seen C or C++ code that worked look like what you displayed.

Re: windows messages

Zizilamoroso16-Sep-02 6:45

Zizilamoroso

16-Sep-02 6:45

http://www.wischik.com/scr/howtoscr.html

... and search for `:

But don't get me wrong. I think it's illegal too.

So, what should it be? (WM_COMMAND, I think)

[VISUAL STUDIO 6.0] [MFC] [WIN98/2]

Re: windows messages

Pavel Klocek16-Sep-02 8:14

Pavel Klocek

16-Sep-02 8:14

A typo or some problem with formating the code in HTML editor.

Pavel
Sonork 100.15206

Problem with "User breakpoint" and RtlFreeHeap. All help appreciated.

16-Sep-02 6:20

When i get to a certain point in my code:

acmDriverOpen(&hacm, hadid, 0);
I get a "User breakpoint called from code at 0x000XXXX" message and in the Output windows it says:

HEAP[MP3.exe]: Invalid Address specified to RtlFreeHeap( 01560000, 01564260 )
Unhandled exception at 0x77f767cd in MP3.exe: User breakpoint.

I would really appreciate it if someone told me what this means and possibly how i can fix it.

Thankyou

-Rune

positioning problems

ns16-Sep-02 5:41

16-Sep-02 5:41

Other than repeated trial and error, how can I figure out the location of my control in code? I am putting two buttons on a CDialog that I want to line up under a couple of CListCtrls. I dont know how to size these since I dont know what areas I am working with. Does one somehow get the number of pixels manually from the IDE? Like if I knew the form is 600 pixels high, I would put my button at 500 pixels if its height is 50. I'm using stuff like:

m_startsearch.MoveWindow(580,30,70,30);
m_cancelsearch.MoveWindow(580,65,70,30);

I dont know if getclientrect is helpful in this case since I want to position these buttons relative to two other controls on the form, which by trial and error I've positioned the way I want. So if I knew the actual number of pixels in my form I could do the adjustments I suppose. Any ideas on how to make this process more scientific?
Thanks,
ns

Re: positioning problems

Bill Wilson16-Sep-02 5:51

Bill Wilson

16-Sep-02 5:51

You can use CWnd::GetWindowRect to get the location of the controls you wish to align to.

Re: positioning problems

Max Santos16-Sep-02 6:14

Max Santos

16-Sep-02 6:14

Use can use a simple way of resize/move controls in a complex dialog with this http://www.codeproject.com/dialog/easysize.asp[^]

Casa.Sapo.pt

Reuse CFormview derived class as dialog?

Aaron Schaefer16-Sep-02 5:23

Aaron Schaefer

16-Sep-02 5:23

Hi All,

Just wondering if anyone knows a simple way to reuse an existing form view as a dialog, without having to create a new CDialog derived class from scratch to do it.

Thanks,

Aaron

Re: Reuse CFormview derived class as dialog?

Pavel Klocek16-Sep-02 8:24

Pavel Klocek

16-Sep-02 8:24

It's not possible to reuse CFormView as a dialog. What should be possible is to embed a dialog (modeless) in a CView derived class (not CFormView) and alternatively using as a modal one.

Pavel
Sonork 100.15206

Single computer identification

doctorpi16-Sep-02 5:14

doctorpi

16-Sep-02 5:14

Hi guys.
Do you know a simple way to identify uniquely a computer independently of the OS? What can I use in MFC to do this?
Best Regards

Re: Single computer identification

Max Santos16-Sep-02 6:52

Max Santos

16-Sep-02 6:52

think that exists some key on registry (i dont know where)

if you have all your windows licensed you have no problem , use the

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductId

if this is not the case then i think you can use:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\InstallDate

it will be very dificult (almost impossible) to find two pc with the same installdate on a local network (anless you have used norton ghost or somenthing like that)

Casa.Sapo.pt

Re: Single computer identification

Renjith Ramachandran16-Sep-02 7:47

Renjith Ramachandran

16-Sep-02 7:47

its better to consider the Disk Volume label/processor ID
there s various API s to query the details..

WUSIWUG

Re: Single computer identification

TyMatthews16-Sep-02 10:49

TyMatthews

16-Sep-02 10:49

I would recommend using the same mechanism that is in use for networking... the MAC address of the machine's NIC. Every NIC ever manufactured has a unique MAC address, no matter what hardware it goes into or what operating system runs it. These have to be unique, otherwise networking protocols would not work.

Take a look at the GetAdaptersInfo() function in the Windows Platform SDK. It's probably the easiest way. Note that this is a Win32-specific mechanism. Unfortunately, there are no universal C/C++ standards for working with network protocols. It's an OS-specific thing and every platform has its own method for doing so.

"The significant problems we face cannot be solved at the same level of thinking we were at when we created them." -Albert Einstein

URGENT required help on Multiple Dialog & SetTimer problem!

16-Sep-02 4:52

Hi,

I have multiple Dialog and I need a Timer to trigger a timing event (it should work at any time & any where)

For now I do the following, and have big problem:

1) In Main dialog I have a ListControl box, I SetTimer(1, 5000, NULL) for 5 seconds trigger in OnInit()

2) I use WM_TIMER to create OnTimer(...), in here I display a ListCtrl items (after changing their values), and "only display" if I am sure I am "at the Main Dialog"

3) Before display the listctrl, I did use DeleteAllItems() to clear the listview!

*) If I do not switch the Main Dialog to others, it works perfectly! But even I switch once & coming back rightaway ... my listctrl is not response as before (never refresh) ... even it did get in the OnTimer() ... some thing weird happens very fast & un-controllable!

I hope that someone know the real problem ... or tell me how I use another SetTimer method!

I am really appreciate any help & suggectons here, I stuck to this issue for more than 3 days!

Many thanks,

Re: URGENT required help on Multiple Dialog & SetTimer problem!

Renjith Ramachandran16-Sep-02 8:18

Renjith Ramachandran

16-Sep-02 8:18

can u give the code which u try there...
i think thats bcz of expiring the scope of the object...how u call the dialogs..?? be specific..and give the code if u can..

WUSIWUG

Re: URGENT required help on Multiple Dialog & SetTimer problem!

ATC16-Sep-02 9:34

ATC

16-Sep-02 9:34

Hi renjith,

Please see more Update detail in my new post, it will explain where is the real problem. Here is some parts of my codes:

a) In OnInit() of Main.cpp:
{
f_Main = true;
CWnd::KillTimer(TimerNumb);
TimerNumb = CWnd::SetTimer (1,5000, NULL);
}

b) In OnTimer() of Main.cpp:
{
cnt++;

// Toggle every Timer trigger
if(!f_toggle)
{
f_toggle = true;
ListControl(f_toggle);
}
else
{
f_toggle = false;
ListControl(f_toggle);
}
}

c) In ListControl(bool flag):
{
LVITEM listItem;
listItem.mask = LVIF_TEXT;
listItem.iSubItem = 0;

// Only Refresh Screen when in the Main GUI
if(f_Main)
{
m_cnt = cnt;
m_list.DeleteAllItems();

if(ON)
{
m_toggle.SetCheck(true);
int row = 0;
UpdateData(false);

while(row < 10)
{
listItem.iItem = row;
listItem.pszText = "dummy";
m_list.InsertItem (&listItem);

m_list.SetItemText (row, 0, "Hello");
m_list.SetItemText (row, 1, "Hello");
m_list.SetItemText (row, 2, "Hello");

row++;
}
}
else
{
m_toggle.SetCheck(false);
UpdateData(false);
}
}

UpdateData(false);
}

Re: URGENT required help on Multiple Dialog & SetTimer problem!

Renjith Ramachandran19-Sep-02 2:26

Renjith Ramachandran

19-Sep-02 2:26

Please mail me your workspace..
My ID is rrenjith@m2comsys.com

WUSIWUG

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