Re: What format is an icon? Bitmap or ?? - C / C++ / MFC Discussion Boards

Anonymous11-Sep-02 18:12

11-Sep-02 18:12

i m having a problem in loading my customised bitmap(coloured) as cursor in my exe
i inserted a coloured bitmap in resource and & called LoadImage (...)
But did not get correct results
i can get a monochrome bitmap loaded but while loading a coloured Bitmap the function fails
Plz suggest me some solution to it

Re: customised bitmap cursor

Ernest Laurentin11-Sep-02 18:49

Ernest Laurentin

11-Sep-02 18:49

Hmmm! should not fail unless you not using correct parameter. Try using LR_DEFAULTCOLOR for colored bitmap or post some code with values for your LoadImage call.

I am in YYY Big Grin | :-D

Re: customised bitmap cursor

Anonymous12-Sep-02 1:37

Anonymous

12-Sep-02 1:37

i tried it , but it didnt work
i tried it like this also

HCURSOR nCursor;
nCursor = AfxGetApp()->LoadCursor(IDC_CURSOR1);
SetCursor(nCursor);

here i created IDC_CURSOR1 as a monochrome cursor then it worked but when i created a coloured corsor it didnt work

What format is an icon? Bitmap or ??

JohnnyG11-Sep-02 15:59

JohnnyG

11-Sep-02 15:59

Is an icon just a bitmap file of a certain size and color depth? The reason I'm asking is cuz I have Paint Shop Pro and it won't open up an .ico file for editing.

Was wondering if I could take a bitmap file and scale it down to the size of an icon but if it's a different format I'd need to know that. If it isn't then I can just save it as a bitmap and rename it to .ico extension.

Re: What format is an icon? Bitmap or ??

Christian Graus11-Sep-02 16:18

Christian Graus

11-Sep-02 16:18

VC+ 6 will edit icons. The difference is they have areas which take on the background color an areas which are transparent, but I think they are essentially a bmp.

Christian

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Cats, and most other animals apart from mad cows can write fully functional vb code. - Simon Walton - 6-Aug-2002

Re: What format is an icon? Bitmap or ??

Rein Hillmann11-Sep-02 16:36

Rein Hillmann

11-Sep-02 16:36

Kenny wrote a very nice resource management page that explains how icons are laid out in files and how to extract them:

http://www.kennyandkarin.com/Kenny/CodeCorner/Tools/IconBrowser/

Re: What format is an icon? Bitmap or ??

Rein Hillmann11-Sep-02 16:40

Rein Hillmann

11-Sep-02 16:40

Oh and to clarify:
An icon is a series of multiple bitmaps with varying sizes and color depths. All the bitmaps are stored in a single file with additional header information.

Theoretically you could extract or inject a single bitmap provided you manipulate the header information correctly.

Re: What format is an icon? Bitmap or ??

JohnnyG11-Sep-02 17:24

JohnnyG

11-Sep-02 17:24

So, is there a decent icon editor that also imports bitmaps? I don't really want to design an icon in VC6. I'm used to using PaintShop Pro. I basically want to create or find a larger image and shrink it down to the size of an icon and then save it as an icon.

I guess I could do this in Paintshop Pro and then copy and paste it into VC6 right?

Re: What format is an icon? Bitmap or ??

Rein Hillmann11-Sep-02 18:00

Rein Hillmann

11-Sep-02 18:00

This would work but you'll most probably lose your custom color palette so all the colors will seem wrong.

Have you tried Microangelo yet? That's quite a capable icon editor - you might be able to do what you want with that. I don't have the link but you can google it.

Re: What format is an icon? Bitmap or ??

surbinsho11-Sep-02 18:21

surbinsho

11-Sep-02 18:21

as an icon editor u can use borland C's Workshop
this gives u the editing of icon is any size & then can expand or shrink it to any desired size,
though i didnt use it for icon editing , i used it for Font editing & it gave me gr8 results

surbinsho

Re: What format is an icon? Bitmap or ??

rrrado12-Sep-02 0:23

rrrado

12-Sep-02 0:23

use thios cool soft : http://www.aha-soft.com/articons/

rrrado

Re: What format is an icon? Bitmap or ??

JohnnyG12-Sep-02 7:56

JohnnyG

12-Sep-02 7:56

Thanks, guys!! That ArtIcon s/w was cool!!! I was able to design an icon, cut, paste it into VC6 and also switch it from 32x32 to 16x16 in less than an hour.

List Control With Check Box

sikrip11-Sep-02 13:05

sikrip

11-Sep-02 13:05

Hello,
I have a listcontrol with check boxes.How can i programmatically check an item???

Re: List Control With Check Box

Gary R. Wheeler11-Sep-02 13:44

Gary R. Wheeler

11-Sep-02 13:44

If you are using CListCtrl to control the list control, use the GetCheck() and SetCheck() methods. If you are using straight Win32 API calls, use the ListView_GetCheckState() and ListView_SetCheckState() macros.

Gary R. Wheeler

Is it possible to use high res bitmaps?

Stumped on 24bit Bitmaps11-Sep-02 11:51

Stumped on 24bit Bitmaps

11-Sep-02 11:51

I want to use 24bit res bitmaps in my Visual C++ 6 projects, but unfortunatly they don't load because of some limitation. Does anyone know how to get around this and be able to use 24bit bitmaps?

Thanks in advance, VC++ Gurus!

Re: Is it possible to use high res bitmaps?

Christian Graus11-Sep-02 12:47

Christian Graus

11-Sep-02 12:47

You can use them fine, you just can't look at them or edit them within VC++

Christian

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

Cats, and most other animals apart from mad cows can write fully functional vb code. - Simon Walton - 6-Aug-2002

CListCtrl and wordwrap

RK_200011-Sep-02 11:47

RK_2000

11-Sep-02 11:47

is there a wordwrap feature in CListCtrl, so when your data gets longer than the available width, it would break and add a new line?

Re: CListCtrl and wordwrap

Gary R. Wheeler11-Sep-02 13:51

Gary R. Wheeler

11-Sep-02 13:51

Word wrap depends upon the view. In icon view, text wraps it it's too long, unless you've set the LVS_NOLABELWRAP style. The other views don't wrap text at all. If you need text wrapping (for example, in report view), you woudl have to use custom draw.

Gary R. Wheeler

GUIDGEN

Anonymous11-Sep-02 11:45

Anonymous

11-Sep-02 11:45

This executable is used to generate unique identifiers, or GUIDs, that identify classes, objects, and interfaces.

Why can I not use just a random number or something of that sort instead of using an identifier generated by GUIDGEN for doing stuff like creating a mutex etc? Confused | :confused:

Thanks!

Re: GUIDGEN

Michael Dunn11-Sep-02 13:33

Michael Dunn

11-Sep-02 13:33

You can, but the point of a GUID is that you can be (almost) certain of no name collisions. For example, lots of people might call their mutexes "MySingleInstanceMutex" but no one else will use "{182C40F0-32E4-11D0-818B-00A0C9231C29}" or whatever GUID you get from GUIDGEN.

--Mike--
Just released - RightClick-Encrypt v1.4 - Adds fast & easy file encryption to Explorer
My really out-of-date homepage
Sonork-100.19012 Acid_Helm

Radio Buttons on Property Sheets

Sydney Liles11-Sep-02 11:41

Sydney Liles

11-Sep-02 11:41

I am creating a property sheet with 2 property pages and several controls on the property sheet (they are shared by the 2 property pages so they need to be on the property sheet). I am having to code all of these controls without the benefit of the designer.

I am having a terrible time with the radio buttons Eek! | :eek:

-- I create my group box, then each of the radio buttons. They draw just fine, but the top radio button is set as default (this is fine) and if I try to select the other radio button it is marked as selected and then the app hangs.

Here is the bit of code for the 2 radio buttons:

DWORD dwStyleRBtn1 = BS_AUTORADIOBUTTON | WS_VISIBLE | WS_GROUP | WS_TABSTOP;
CRect rectRadioBtn1(LEFT, TOP, RIGHT, BOTTOM);
m_RBtn1.Create("RBtn1", dwStyleRBtn1, rectRadioBtn1, this, IDC_STATIC);
m_RBtn1.SetFont(pFont);

DWORD dwStyleRBtn2 = BS_AUTORADIOBUTTON | WS_VISIBLE | WS_TABSTOP;
CRect rectRadioBtn2(LEFT, TOP, RIGHT, BOTTOM);
m_RBtn2.Create("RBtn2", dwStyleRBtn2, rectRadioBtn2, this, IDC_STATIC);
m_RBtn2.SetFont(pFont);

m_RBtn1 and m_RBtn2 are CButton objects.

I would greatly appreciate any advice.

Thanks,

Sydney Liles
Software Engineer

Re: Radio Buttons on Property Sheets

Gary R. Wheeler11-Sep-02 13:59

Gary R. Wheeler

11-Sep-02 13:59

Property sheets are containers for property pages. They are not enhanced dialogs. In fact, if you look at the source code for CPropertySheet, you'll see that it derives from CWnd, not CDialog.

I think you can create the effect you are looking for using a header control in a dialog. The two property pages are then simple modeless dialogs (that are children of the dialog containing the header) that you show/hide based on messages from the header control. The additional radio buttons can then sit in the 'parent' dialog.

Gary R. Wheeler

vtable pointer problem with static CList<> object

Roger Allen11-Sep-02 11:39

Roger Allen

11-Sep-02 11:39

I am doing some more work on my article, and am having problems with a CList<> static object for one of my base classes.

// Its declared as follows in the .h file :
	static CList<CPlugInObject, CPlugInObject&>	m_PostPlugInMapList ;
// Its declared as follows in the .cpp file :
CList<CPlugInObject, CPlugInObject&> CPlugInMap::m_PostPlugInMapList ;

Now if I step into the constructor of this, its all OK.

But when I access this object in a member function like this:

CPlugInMap::m_PrePlugInMapList.AddTail(entry) ;

i get an assertion error in objcore.cpp at line 101

if (!AfxIsValidAddress(pOb, pOb->GetRuntimeClass()->m_nObjectSize, FALSE))
{
    TRACE0("ASSERT_VALID fails with illegal pointer.\n");
    if (AfxAssertFailedLine(lpszFileName, nLine))
        AfxDebugBreak();
    return;     // quick escape
}

And if I look at the pOb object, the vtable pointer is in deed NULL! But it shouldn't be!

A bit of background in this is that this code is from a library (.LIB only) which the application and a DLL both link against. So, I could possibly have 2 copies of the same static object, one in the app and one in the DLL.

So, do I have to make my library also have a DLL which both the APP and DLL link against to make sure I only get one copy of the object, or is there another way around this?

Any suggestions welcome!

Roger Allen
Sonork 100.10016

I think I need a new quote, I am on the prowl, so look out for a soft cute furry looking animal, which is really a Hippo in disguise. Its probably me.

Re: vtable pointer problem with static CList<> object

Tomasz Sowinski11-Sep-02 23:49

Tomasz Sowinski

11-Sep-02 23:49

Roger Allen wrote:
So, do I have to make my library also have a DLL which both the APP and DLL link against to make sure I only get one copy of the object, or is there another way around this?

Yep, your static object exists in both executables (.exe and .dll).

You can switch to .dll. You can also create different integration model (from the class names I guess you're creating some plugin framework.) which uses/knows of plugin map only in .exe or main .dll.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: vtable pointer problem with static CList<> object

Roger Allen12-Sep-02 1:38

Roger Allen

12-Sep-02 1:38

Cheers Tomasz, it was late last night when I encountered the problem and didn;t really have the time or the inclination to look further into it just then. THanks for clarifying my thoughts.

Tomasz Sowinski wrote:
from the class names I guess you're creating some plugin framework
Yes, thats exactly what I am doing. Big Grin | :-D

Roger Allen
Sonork 100.10016

I think I need a new quote, I am on the prowl, so look out for a soft cute furry looking animal, which is really a Hippo in disguise. Its probably me.

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