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Re: struct problem

Michael Dunn19-Feb-06 18:26

19-Feb-06 18:26

Even that calculation won't work if the packing size was, say 8 bytes. What he's asking for can't be done in a nice implementation-independent way.

--Mike--
Visual C++ MVP Cool | :cool:

Cool | :cool:

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Re: struct problem

Ryan Binns20-Feb-06 3:20

20-Feb-06 3:20

Ugh. Yes, of course. Thanks for reminding me.

Although if the types are all the same, and you assume the packing is the same between each member it can be done similarly:

address = struct_address + (pos * sizeof(struct_name) / member_count);

It still isn't a good idea though.

Ryan

"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"

Re: struct problem

super_pointer20-Feb-06 18:10

20-Feb-06 18:10

I got a C++/CLI answer
why c++ did not add this function when designing

using namespace System;
using namespace System::Reflection;

public ref struct Record
{
String ^ name;
int age;
};

int main(array<system::string ^=""> ^args)
{
Record ^ rec = gcnew Record;
rec->name = "George Washington";
rec->age = 274;
array<fieldinfo ^=""> ^ fieldInfo;
Type ^ recordType = Record::typeid;

fieldInfo = recordType->GetFields(
static_cast<bindingflags>(
BindingFlags::Public | BindingFlags::Instance));

for (int i = 0; i < fieldInfo->Length; ++i)
{
Console::WriteLine("{0} = {1}",
fieldInfo[i]->Name,
fieldInfo[i]->GetValue(rec));
}

return 0;
}

Re: struct problem

Ryan Binns20-Feb-06 18:53

20-Feb-06 18:53

That's not a C++ function - you're using the features of the .NET class library. It won't work anywhere but under .NET.

I still maintain that it's a bad idea - you're using a structure like an array, so why not just use an array?

Ryan

"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"

How to create a custom control at runtime?

followait19-Feb-06 15:51

19-Feb-06 15:51

How to create a custom control at runtime?
Thanks.

Re: How to create a custom control at runtime?

PJ Arends19-Feb-06 15:57

19-Feb-06 15:57

Call the control's Create() member function.

You may be right
I may be crazy
But it just may be a lunatic you’re looking for
-- Billy Joel --

Within you lies the power for good - Use it!

C:\WINNT\system32\ntdll.dll', no matching symbolic information found.

Tuscon19-Feb-06 15:48

19-Feb-06 15:48

Smile | :)

Hi guys,

I have written a simple VC++ program, it works perfectly ok when i excute it with ctrl+F5. but when i set a break point and start excuting it in Debug mode i get the following errors msgs.

Loaded 'C:\WINNT\system32\ntdll.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\KERNEL32.DLL', no matching symbolic information found.
Loaded 'C:\WINNT\system32\EntAPI.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\ADVAPI32.DLL', no matching symbolic information found.
Loaded 'C:\WINNT\system32\rpcrt4.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\msvcrt.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\psapi.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\NETAPI32.DLL', no matching symbolic information found.
Loaded 'C:\WINNT\system32\dnsapi.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\wsock32.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\ws2_32.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\ws2help.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\netrap.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\ntdsapi.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\WLDAP32.DLL', no matching symbolic information found.
Loaded 'C:\WINNT\system32\secur32.dll', no matching symbolic information found.
Loaded 'C:\WINNT\system32\samlib.dll', no matching symbolic information found.
The program 'C:\TMP\VCplus\Debug\VCplus.exe' has exited with code 0 (0x0).

Can any one of you guys help mee.....

Smile | :)

Smile | :)

Thank you guys.....
Tuscon.....

Re: C:\WINNT\system32\ntdll.dll', no matching symbolic information found.

PJ Arends19-Feb-06 15:55

19-Feb-06 15:55

Those are not errors. Those messages are just telling you that the dlls were loaded by your program, and that they do not contain any debugging information so the debugger will not be able to step into any code in those dlls.

You may be right
I may be crazy
But it just may be a lunatic you’re looking for
-- Billy Joel --

Within you lies the power for good - Use it!

Re: C:\WINNT\system32\ntdll.dll', no matching symbolic information found.

Tuscon19-Feb-06 16:06

19-Feb-06 16:06

Thank You very much...
Smile | :)

Smile | :)

Thank you guys.....
Tuscon.....

Need help with to append text into Editbox

the Jimmy19-Feb-06 15:27

19-Feb-06 15:27

Hi,
Please show me how to append text into the editbox.
I have a editbox, with has the associated variable:
CEdit m_Edit;
CString m_StringEdit;

I use this function to display text in the editbox:
void CMyEditClass::DisplayOnDebugWindow(CString debugdata)
{
UpdateData();
m_StringEdit = debugdata;
UpdateData(FALSE);
}

the problem is each time, when I use this function, only the new debug data is displayed. The current display data in the editbox is flushed out. I want to append the new debugdata into the editbox. Please show me how to do this.
Thank
Jim

Jim

Re: Need help with to append text into Editbox

PJ Arends19-Feb-06 15:50

19-Feb-06 15:50

CString text = m_Edit.GetWindowText();
text += NewText;
m_Edit.SetWindowText(text);

You may be right
I may be crazy
But it just may be a lunatic you’re looking for
-- Billy Joel --

Within you lies the power for good - Use it!

Re: Need help with to append text into Editbox

the Jimmy19-Feb-06 21:46

19-Feb-06 21:46

Pj,
Thank you so much. It works!
Jim

Jim

Problem with bitmap image copy from Cstatic

ingoogle19-Feb-06 14:53

19-Feb-06 14:53

Hello,

I am able load image (*.bmp,*.tiff,*jpg)on Cstatic picture control using gdi+ API graphics.Drawimage() and it fits to my cstatic resized box of MFC dialog based application.

when i load large images of size 80MB or 1GB tiff it takes hell lot time
and i need to process it using my interpolation algorithm for getting result image this goes double the time of loading. made me unconsiderable code/appln.
so i decided to copy only Cstatic loaded images for algorithm process stucked up how to copy image data with reduced image size.

please help on this regard
thanks in advance
Neel

[mfc] system tray icons

Sam 200619-Feb-06 9:47

19-Feb-06 9:47

hi,

i've got another question... this time about system tray icons. i've looked at chris's article at http://www.codeproject.com/shell/systemtray.asp but i'm doing something wrong (obviously). i don't know where to put CSystemTray m_TrayIcon;. can someone tell me? i think if knew that i could figure out the rest from the article.

thanks in advance,
sam kline

Re: [mfc] system tray icons

David Crow19-Feb-06 9:53

19-Feb-06 9:53

Sam Kline wrote:
i don't know where to put CSystemTray m_TrayIcon;. can someone tell me?

It's a member of the dialog class, or the CFrameWnd class if you are doing an SDI or MDI application.

"The greatest good you can do for another is not just to share your riches but to reveal to him his own." - Benjamin Disraeli

Re: [mfc] system tray icons

Sam 200619-Feb-06 10:18

19-Feb-06 10:18

so where do i put it? Wink | ;-)

Wink | ;-)

Confused | :confused:

i can't find a place.

thanks for the help,
sam kline

Re: [mfc] system tray icons

David Crow19-Feb-06 10:34

19-Feb-06 10:34

Sam Kline wrote:
so where do i put it?

In the class' declaration, which is usually the .h file.

"The greatest good you can do for another is not just to share your riches but to reveal to him his own." - Benjamin Disraeli

Re: [mfc] system tray icons

MANISH RASTOGI19-Feb-06 17:31

19-Feb-06 17:31

Use CBS_DROPDOWNLIST style

Manish Rastogi

Re: [mfc] system tray icons

David Crow20-Feb-06 3:09

20-Feb-06 3:09

manish rastogi wrote:

Use CBS_DROPDOWNLIST style

Confused | :confused:

What does this style have to do with the subject?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

[mfc] combobox - disable typing

Sam 200619-Feb-06 8:14

19-Feb-06 8:14

hi,

i've got a pretty simple question about comboboxes. i want to make the combobox 'read only' so that my code can still add items to it, but the user can't add his/her own things to it. does anyone know how i can do this?

thanks in advance,
sam kline

Re: [mfc] combobox - disable typing

Christian Graus19-Feb-06 8:24

Christian Graus

19-Feb-06 8:24

It's actually one of the comobo box styles, I think it's called 'Simple dropdown'. Depending on your IDE version, there is a property somewhere for this.

Christian Graus - Microsoft MVP - C++

Re: [mfc] combobox - disable typing

Sam 200619-Feb-06 8:30

19-Feb-06 8:30

oh yeah, i see that.

thanks,
sam kline

Re: [mfc] combobox - disable typing

Jörgen Sigvardsson19-Feb-06 9:53

Jörgen Sigvardsson

19-Feb-06 9:53

Drop list is what you're looking for. Smile | :)

Smile | :)

-- modified at 15:54 Sunday 19th February, 2006

Re: [mfc] combobox - disable typing

MANISH RASTOGI19-Feb-06 17:32

19-Feb-06 17:32

Use CBS_DROPDOWNLIST style.

Manish Rastogi

MFCGridCtrl not visible

toxcct19-Feb-06 4:52

19-Feb-06 4:52

hi every one,

i've been asking a question about Chris Maunder's CGridCtrl about displaying it which remains unanswered : here[^]

i hope that one of you could help me in this direction.

thanks...

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.24][3.0 soon...]

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