C / C++ / MFC

Setting up a slider control.

4-Jul-03 2:45

How didn't it work? Did it match the 'MyVariable ==' like it's not meant to, or did it not match the 'MyVariable =' like it's supposed to

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

blackmesa3-Jul-03 20:50

blackmesa

3-Jul-03 20:50

I'm writing a simple game in win32/gdi, and I want to allow the user to modify the frame rate with a horizontal slider control. How do I set it up? I've found information on how to do so in MFC, but don't want to use MFC in my application for performance purposes.

Any help much appreciated.

Blackmesa.

how to get the current window system language name?

benben3-Jul-03 17:36

benben

3-Jul-03 17:36

Hi:
How could I know if my windows is English version or the other language version(such as Chinese ,German ...)?
I use GetLocaleInfo(LOCALE_SYSTEM_DEFAULT,LOCALE_IDEFAULTLANGUAGE ,szPath,6),
but when I test it in English version and Chinese version windows system,it both returns "0804",Why? How should I do?

Thanks
benben.

Re: how to get the current window system language name?

Ryan Binns3-Jul-03 20:27

3-Jul-03 20:27

Use LOCALE_SLANGUAGE instead of LOCALE_IDEFAULTLANGUAGE. Your buffer will need to be a bit bigger too Wink | ;)

[edit] I used LOCALE_USER_DEFAULT instead of LOCALE_SYSTEM_DEFAULT so that it works if different users have different languages [/edit]

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

Thanks

benben4-Jul-03 21:37

benben

4-Jul-03 21:37

Thanks
Benben

Re: Thanks

Ryan Binns4-Jul-03 21:41

Image is not showing in 16 million colors

4-Jul-03 21:41

You're welcome Smile | :)

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

spicy_kid20003-Jul-03 17:34

spicy_kid2000

3-Jul-03 17:34

Hi all, please help me.
I am trying to load a bitmap using LoadImage . I have attach the code . Please create a bitmap of size 32*23 and save it to 256 colors.My Display pallette setting is in 16 million colors.

This is working fine in 256 color setting.

32*32 is the image width and image height.

OnDrawFunction()
{
typedef unsigned short UINT16;

UINT16 *MyDisplayBuffer = (UINT16*)GlobalAlloc(GPTR,32*32*2);

m_hBitmap = (HBITMAP)LoadImage(NULL,"C:\\Bitmap1.bmp", IMAGE_BITMAP, 0, 0,LR_LOADFROMFILE | LR_CREATEDIBSECTION | LR_DEFAULTSIZE);

CBitmap bmp;

bmp.Attach(m_hBitmap);

BYTE* DisplayBuffer=(BYTE*)GlobalAlloc(GPTR,32*32);

int Update = 0;

int color =0;

CDC memdc;

memdc.CreateCompatibleDC(pDC);

SelectObject( memdc,m_hBitmap);

bmp.GetBitmapBits(32*32,DisplayBuffer);

for(int y =0; y < 32; y++)
{
for(int x =0 ; x< 32; x++)
{
int index = x + y *32;

color= DisplayBuffer[Update];

MyDisplayBuffer[index] =color

Update++;
}
}

CDC dcDisplayMemory;

CBitmap bmp1;

dcDisplayMemory.CreateCompatibleDC(pDC);

bmp1.CreateCompatibleBitmap(pDC,32,32);

dcDisplayMemory.SelectObject(&bmp1);

bmp1.SetBitmapBits(32*32 *2,MyDisplayBuffer);

pDC->BitBlt(10,20,32,32,&dcDisplayMemory,0,0,SRCCOPY);
}

Thanks in Advance

Re: Image is not showing in 16 million colors

Ryan Binns3-Jul-03 19:13

Re: Image is not showing in 16 million colors

3-Jul-03 19:13

This is a very long-winded way of doing it. Why don't you just do this:

HGDIOBJ hBitmap = LoadImage(NULL, _T("C:\\Bitmap1.bmp"), IMAGE_BITMAP,
      0, 0, LR_LOADFROMFILE | LR_DEFAULTSIZE);
CDC memDC;
memDC.CreateCompatibleDC(pDC);
HGDIOBJ hbmOld = SelectObject(memDC.m_hDC, hBitmap);
pDC->BitBlt(10, 20, 32, 32, &memDC, 0, 0, SRCCOPY);
SelectObject(memDC.m_hDC, hbmOld);
memDC.DeleteDC();

This should work nicely Smile | :)

spicy_kid20003-Jul-03 19:25

spicy_kid2000

3-Jul-03 19:25

No i can use that function directly

Thanks

Max array size?

leppie3-Jul-03 17:18

3-Jul-03 17:18

Hi there

Tell me this is NOT true! How can the maximum array size only be 1035720 (0xfcdc8)?

leppie ::AllocCPArticle(Generic DFA State Machine for .NET);

John M. Drescher3-Jul-03 17:24

John M. Drescher

3-Jul-03 17:24

Are you talking about static arrays or dynamic?

[EDIT]
Static arrays are limited by the size of the stack which is usually 4 MB (I think). Dymanic arrays are limited by the largest addressible block on the heap which is less than 2GB and depends on what addresses your program / dlls load at..
[/EDIT]

John

leppie3-Jul-03 17:37

3-Jul-03 17:37

John M. Drescher wrote:
Are you talking about static arrays or dynamic?

Static, but now I release I need a 64-bit PC DAMMIT!!!

I'm trying to do an analysis of a "transformation" to see how many instances of a unsigned int exists, hence the need for a "32-bit" sized array. I thought about going bitwise (just to get an off or on state) too, but still no luck.

O well back to the abacus/tickertape/punchcards/etc. And they say PC are Turing complete....(ok thats debatable, with hard work anything can be done).

leppie ::AllocCPArticle(Generic DFA State Machine for .NET);

John M. Drescher3-Jul-03 17:47

John M. Drescher

3-Jul-03 17:47

How about a sparse array? I assume you will have no where near 4 GB of data?

John

leppie3-Jul-03 18:03

3-Jul-03 18:03

John M. Drescher wrote:
How about a sparse array?

WTF is that? Poke tongue | ;-P

Seriously

John M. Drescher wrote:
I assume you will have no where near 4 GB of data?

I just need the "space" to see if what I am attempting to do is viable or not. In fact, the input is only 16bits.

leppie ::AllocCPArticle(Generic DFA State Machine for .NET);

John M. Drescher3-Jul-03 18:21

John M. Drescher

3-Jul-03 18:21

leppie wrote:
WTF is that?

I am just about to go to sleep so rather than try to explain it myself I give you a link I found searching the web:

http://www.cs.uregina.ca/links/class-info/230/labs/Assign09.html[^]

John

leppie3-Jul-03 18:27

3-Jul-03 18:27

OK, I manage to get something going Smile | :)

PC is choking but going! (even turned off those "slow" debug flags), Hopefully it will finish soon!

leppie ::AllocCPArticle(Generic DFA State Machine for .NET);

Ryan Binns3-Jul-03 19:05

CListCtrl - lost sel on postmsg DBLCLK

3-Jul-03 19:05

Looks like you're allocating an array on the stack. That probably won't work because the stack size is limited. To get an array that big you'll have to allocate the array dynamically.

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

kyndestad3-Jul-03 17:09

kyndestad

3-Jul-03 17:09

With a simple CListBox I can SetCurSel() then from another routine

pWnd = GetDlgItem(IDC_LIST_BOX);
pWnd->PostMessage(WM_LBUTTONDBLCLK);

and in the handler for double click I can GetCurSel() and all is well.

If I get fancier with a CListCtrl (In Report style)
and programatically set a row to selected,

when I pWnd->PostMessage(WM_LBUTTONDBLCLK); to the ListCtrl

in the double click handler there is no longer a selected item

nItem = pMyListCtrl->GetNextItem(-1,LVNI_SELECTED); returns -1 but anytime before the
PostMessage() it is returning the correct selected row.

Anyone have a clue about this?

-kry

Re: CListCtrl - lost sel on postmsg DBLCLK

Ryan Binns3-Jul-03 17:15

Re: CListCtrl - lost sel on postmsg DBLCLK

3-Jul-03 17:15

Sending a WM_LBUTTONDBLCLK like that won't do anything. This is because you haven't specified the position where the mouse is double clicked (look at the documentation for the WM_LBUTTONDBLCLK message). It appears to work for a list box, because a list box never removes the selection. If a click doesn't hit anything, it doesn't change the selection. However, for a list-view control, if a click doesn't hit anything, then the selection is removed, hence GetNextItem(-1,LVNI_SELECTED) returns -1.

Hope this helps,

Ryan

Being little and getting pushed around by big guys all my life I guess I compensate by pushing electrons and holes around. What a bully I am, but I do enjoy making subatomic particles hop at my bidding - Roger Wright (2^nd April 2003, The Lounge)

Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late - John Nichol "Point Of Impact"

kyndestad7-Jul-03 5:11

kyndestad

7-Jul-03 5:11

Thanks Ryan!

I've implemented the following and it is working great!
// Setup a post message with mouse x&y pointed to the selected item

pListCtrl =
(CListCtrl *)pThis->GetDlgItem(IDC_LIST_OPTION_SOURCES_REPORT);
pListCtrl->GetItemRect(pThis->m_OptionSourcesIdx,&rect,LVIR_BOUNDS);

lParam = MAKELPARAM(rect.left,rect.top);
pListCtrl->PostMessage(WM_LBUTTONDBLCLK,0,lParam);

I see you also were most helpful to others that night answering posts all night long! Great job - you efforts are most appreciated!
-K

Re: CListCtrl - lost sel on postmsg DBLCLK

Ryan Binns7-Jul-03 5:16