C / C++ / MFC Discussion Boards

Re: how can a tiff file be read?

John R. Shaw8-Jan-04 6:26

John R. Shaw

8-Jan-04 6:26

You could start by looking at CxImage in the Bitmap & Palettes section of code project, it can open TIFF images.

INTP

Access file information cannot display in List Box

ansontong8-Jan-04 4:45

ansontong

8-Jan-04 4:45

Dear Friends,

I have a question on displaying access file information in my list box
rst.m_LoginUser(CString) & rst.m_LoginPassword(CString) are the information in the access file.

The code is

// Local Varibles
COperationRecordset rst(db);
har str [255];

// Start of the execution
rst.Open();
while (!rst.IsEOF())
{
sprintf(str,"%s\n%s",rst.m_LoginUser,rst.m_LoginPassword);
SendDlgItemMessage(hWnd,IDC_System,LB_ADDSTRING,0, (LPARAM)str);

rst.MoveNext();
}
rst.Close();

Regards,
Anson Tong

How to correctly see order of controls in design time, in a CDialog ?

vgrigor8-Jan-04 4:31

vgrigor

8-Jan-04 4:31

If I set tab-oreder,
than at run-time CDialog is looking corectly,

but at design view of Dialog
z-order of controls remains not changed -
not dependent from tab-order,
so wrong looking...

It is a probem.

I need to desing Cdialog and view it correctly,
so - is there a way, like in Ms Word - ability "send control back of order" -in design view ?

thanks you.

Re: How to correctly see order of controls in design time, in a CDialog ?

John R. Shaw8-Jan-04 4:46

John R. Shaw

8-Jan-04 4:46

There should be no problem.
1) Select: Layout -> Tab Order
2) Click on controls in the order you wish.
3) Select: Layout -> Test (or select test button)

Do not forget to check the Group property in the first item of each group of controls, if needed.

INTP

Re: How to correctly see order of controls in design time, in a CDialog ?

vgrigor8-Jan-04 4:49

vgrigor

8-Jan-04 4:49

I see correctly at test,

but is there a method to see picture at design view of dialog directly ?

Re: How to correctly see order of controls in design time, in a CDialog ?

John R. Shaw8-Jan-04 5:24

John R. Shaw

8-Jan-04 5:24

That was every thing you could do as far as tab ordering, at design time.
Maybe you should post a more detailed question, as to what the problem is.

INTP

Re: How to correctly see order of controls in design time, in a CDialog ?

vgrigor8-Jan-04 5:32

vgrigor

8-Jan-04 5:32

I need to see picture at design view
as if tab-order is applied,
like when I press Test button for Dialog.

Re: How to correctly see order of controls in design time, in a CDialog ?

John R. Shaw8-Jan-04 6:21

John R. Shaw

8-Jan-04 6:21

That is what the Test button is for.
The Tab Order menu selection shows the actual tab order you set.

What you are describing is the method you wish to use in order to solve a problem and not the real problem its' self.

You mensioned some thing about it not looking (or was that working) right at runtime, in your first post. If it is a tab order problem then the problem should also exist when you run the test, at design time. If the group property is not used correctly that will also cause it to act in an unexpected way (will also show up in test).

I recomend the you get a pincel and paper, and try describe the details of what you are observing. You will probably descover what the problem is while you are trying to describe it to you self.

If worst comes to worst, then open the resource file as text and edit the dialog box by and. The tab order is the order in which the controls are entered into the resource, so you could just rearange the lines to be in the order you want (and remember to set use the group property).

I do not know if any of this has helped, but it is the best I can do without
having the project loaded in front of me.

Good Luck!

INTP

Re: How to correctly see order of controls in design time, in a CDialog ?

vgrigor9-Jan-04 5:16

vgrigor

9-Jan-04 5:16

thanks for discussion.

Z-order meand- visible depth, or sequence how to controls appears- next over previous by look.

It possbile to edit directly ctrl-d, or by sequence in rc file.

Problem is now following:

In design mode I see REVERSE order - from wich I will see really when press test or run-time.

May be some option do this REVERSE ?
Do some one know which option do that and
how to correct?

Dialog in rc file looks like:
IDD_Domain_1 DIALOGEX 0, 0, 575, 319
STYLE DS_SETFONT | DS_MODALFRAME | DS_3DLOOK | DS_FIXEDSYS | WS_MINIMIZEBOX |
WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "xxx"
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
...

Thanks you.

Problem with slider-control and NM_CUSTOMDRAW

Member 7988338-Jan-04 4:25

Member 798833

8-Jan-04 4:25

Hi folks!

I want to have an ownerdrawn trackbar (Slider) control. Therefore I check for a WM_NOTIFY event with NM_CUSTOMDRAW in the code member of the NMHDR-structure. Let me give a short code example

code:

case WM_NOTIFY:
lpNotify = (LPNMHDR)lParam;
switch(lpNotify->idFrom)
{
case IDC_SLIDER1:
switch(lpNotify->code)
{
case NM_CUSTOMDRAW:
lpDraw = (LPNMCUSTOMDRAW)lParam;
switch(lpDraw->dwDrawStage)
{
case CDDS_PREPAINT:
return CDRF_NOTIFYITEMDRAW;
case CDDS_ITEMPREPAINT:
switch(lpDraw->dwItemSpec)
{
case TBCD_CHANNEL:
FillRect(lpDraw->hdc,&lpDraw->rc,(HBRUSH)GetStockObject(BLACK_BRUSH));
return CDRF_SKIPDEFAULT;

case TBCD_THUMB:
FillRect(lpDraw->hdc,&lpDraw->rc,(HBRUSH)GetStockObject(WHITE_BRUSH));
return CDRF_SKIPDEFAULT;
}
break;
}
break;
}
break;
}
break;

Well, this works fine up to the CDDS_PREPAINT part, where I request an interaction into the control's drawing procedure.
But I never reach the most important part of CDDS_ITEMREPAINT where I acutally paint the control. I've read tons of documentations of this function and all describe it this way.

Does anyone know why it doesn't work for my example?

thanks in advance

Starik

P.S. Environment: VC++ 6.0 SP5
CommCtl. Version: 5.81.4704.1100

Re: Problem with slider-control and NM_CUSTOMDRAW

KaЯl8-Jan-04 4:47

KaЯl

8-Jan-04 4:47

This article [^] should provide useful info.

The technique you mention works well for me, but I use a class derived from CSliderCtrl (sounds more logical that an object draws itself), and use message reflection to get the CustomDraw notification (ON_NOTIFY_REFLECT(NM_CUSTOMDRAW, OnCustomDraw))

And all the girlies say I'm pretty fly for a white guy

Re: Problem with slider-control and NM_CUSTOMDRAW

Member 7988338-Jan-04 6:53

Member 798833

8-Jan-04 6:53

Thanks for the article. But I'm looking for a solution with any use of MFC-classes. Does anyone know a solution just using plain Win-API.

Mouse Highlighting

Anthony98878-Jan-04 3:44

Anthony9887

8-Jan-04 3:44

I would like to be able to highlight a section of a graph, very similar to audio programs highlighting a wav pattern by using the mouse. Any ideas?

Thanks

Re: Mouse Highlighting

Maximilien8-Jan-04 4:05

Maximilien

8-Jan-04 4:05

You can draw a rectangle area, the "selection", in XOR; look for CDC::SetRop2.

you also need to handle the mouse down, move and up to start and manage the drawing.

Maximilien Lincourt
"Never underestimate the bandwidth of a station wagon filled with backup tapes." ("Computer Networks" by Andrew S Tannenbaum )

Help for Toggling toolbar buttons

Ruchit Sharma8-Jan-04 1:29

Ruchit Sharma

8-Jan-04 1:29

Hi
I would like to know how to make a toolbar button toggle. For example, in MDI if there are two child windows and corresponding buttons on the toolbar for them, if the button

is clicked once then the child window should appear and when it is clicked for the second time the child window should dissappear. Please help me regarding this. This is urgent.

Thanking you,
Regards
Ruchit Sharma. R

Help for Toggling toolbar buttons

Ruchit Sharma8-Jan-04 1:29

Ruchit Sharma

8-Jan-04 1:29

Re: Help for Toggling toolbar buttons

Monty²8-Jan-04 1:40

Monty²

8-Jan-04 1:40

Add a Handler for ON_COMMAND_UI (Toolbar Button)

void CMainFrame::OnMY_SNAZZYButton(CCmdUI* pCmdUI)
{
    pCmdUI->SetCheck(..1 for check , 2 for uncheck...);
}

Hope it Helps Smile | :)

Live as if your were to die tomorrow. Learn as if you were to live forever.
-Mahatma Gandhi

MDI Problem!

skylonely8-Jan-04 1:25

skylonely

8-Jan-04 1:25

I generated a FormView Dialog in a MDI, I can use a item in Menu to active and display the dialog, however, when I click the MINIMIZEDBOX on the dialog, it will disappear, and I can't find it back ever.

I must say this dialog didn't destroy normally!

What should I do , do you meet with this kind of problem?

Hoping... OMG | :OMG:

Declaring a global variable of a template type

tguzella8-Jan-04 1:21

tguzella

8-Jan-04 1:21

Hi there

I am writing a program to use linked lists using templates, and i am trying to make it as fast as possible, so i am thinking of storing the address of the last inserted item.
Each node of the list if declared as follows:

template <class ItemType>
struct NodeList
{
ItemType *item;
NodeList<ItemType> *next;
}

what i am trying to do is to declare a global variable like

template <class ItemType>
NodeList<ItemType> *last_inserted=NULL;

, but the compiler won't allow me to do that. If instead i declare it as
NodeList<<int>> *last_inserted=NULL, it is ok, but it would work for integers only.

How can I get this to work???

Thanks

Re: Declaring a global variable of a template type

Johnny ²8-Jan-04 5:23

Johnny ²

8-Jan-04 5:23

Have you thought about using the STL to do this? It does exactly what you need, is about as fast as you can get, and most importantly, it works without you needing to re-invent something. An example can be found here[^].

If you really must create your own linked list, then there is no need to use a global (which is a bad thing to do anyway) for the next position. Instead, store it in the class that provides the list operations.

Re: Declaring a global variable of a template type

tguzella11-Jan-04 13:21

tguzella

11-Jan-04 13:21