C / C++ / MFC

Re: How to show a brief message on computer screen (not require confirmation)?

16-Jun-09 3:30

Can we show a brief message on the computer screen (not within the GUI) in 1 second then automatically dissappear? It can't be done with the AfxMessageBox, because it requires user confirmation!

- I did do a trick before by launching a dialog box with the Text message then close it later ... but it got some problem at a specific events.

Thanks to any help.

David Crow16-Jun-09 3:37

Re: How to show a brief message on computer screen (not require confirmation)?

16-Jun-09 3:37

THAQCD wrote:
Can we show a brief message on the computer screen (not within the GUI)...

Are you referring to a console application, or the IDE?

See here for more.

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THAQCD16-Jun-09 4:02

Re: How to show a brief message on computer screen (not require confirmation)?

16-Jun-09 4:02

I forgot to mention that I use the MFC AplWizzard (Dialog based), your link led me to C# project which I don't have!

David Crow16-Jun-09 4:06

Re: How to show a brief message on computer screen (not require confirmation)?

16-Jun-09 4:06

THAQCD wrote:
...your link led me to C# project which I don't have!

No it didn't. You might want to check again.

THAQCD16-Jun-09 4:16

Re: How to show a brief message on computer screen (not require confirmation)?

16-Jun-09 4:16

I did verfy the Demo project (after extract files), it doesn't have the .dsw suffix for VC++ 6.0 but it has the .sln ... might be it for Visual Studio C++ & C# ?

David Crow16-Jun-09 4:18

Re: How to show a brief message on computer screen (not require confirmation)?

16-Jun-09 4:18

Did you read the article and look at the code? It's clearly MFC, which is VC++.

THAQCD16-Jun-09 4:45

Re: How to show a brief message on computer screen (not require confirmation)?

16-Jun-09 4:45

I verify them now (before I only download the project & hope can see codes more easily) & will try out!

Thanks to be patient with me!

KarstenK17-Jun-09 4:19

KarstenK

17-Jun-09 4:19

you can creeate a modeless dialog with a timer, which will close the dialog

Press F1 for help or google it.
Greetings from Germany

how to compare one 3d vector with other 3d vector

pinky888416-Jun-09 3:29

pinky8884

16-Jun-09 3:29

I have Two 3d vectors and i want to compare the values of this two 3d vectors.plz help me and tell me how should i compare one 3d vector with other 3d vector.

Project Engineer

Re: how to compare one 3d vector with other 3d vector

Maximilien16-Jun-09 3:47

Maximilien

16-Jun-09 3:47

by 3d vector are you meaning a IJK vector ? or a vector of vector of vector ?

if the former, just do a simple function that takes the 2 vectors and compare the values (within a tolerance if you are using floats/doubles).

if the later, you need to loop each vector and compare each element.

in both cases there are probably fancy STL stuff to do it.

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Re: how to compare one 3d vector with other 3d vector

Stuart Dootson16-Jun-09 9:06

Stuart Dootson

16-Jun-09 9:06

Something like this?

struct Vec3D
{
   Vec3D(int x_, int y_, int z_) : x(x_), y(y_), z(z_) {}
   int x, y, z;
};

bool operator==(Vec3D const& left, Vec3D const& right)
{
   return left.x==right.x && left.y==right.y && left.z==right.z;
}

Then you can just do:

Vec3D v1, v2;
if (v1==v2) { /* they're the same!!! */ }

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: how to compare one 3d vector with other 3d vector

molesworth16-Jun-09 12:51

molesworth

16-Jun-09 12:51

Given the "accuracy" of floating point values, you might want an "abs(x1 - x2) < epsilon" test, rather than "==".

There are three kinds of people in the world - those who can count and those who can't...

Re: how to compare one 3d vector with other 3d vector

Stuart Dootson16-Jun-09 13:03

Stuart Dootson

16-Jun-09 13:03

Waaaaay ahead of you - note the types I used for the vector co-ordinates Smile | :)

I'd rather tackle one problem at a time with the OP - comparison of structs/classes first, floating-point nastiness after that when he says 'but I'm using floating point numbers'.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

CString's GetBufer() and const

transoft16-Jun-09 2:45

transoft

16-Jun-09 2:45

Hi
The CString's GetBuffer() function can not be used with "const". Is there a workaround method to let it work?

Best regards,

David Crow16-Jun-09 2:48

16-Jun-09 2:48

Are you referring to the LPCTSTR operator?

transoft16-Jun-09 3:32

transoft

16-Jun-09 3:32

I am using it in a following function:

void Cmyclass::myfunction(ostream & outputStream) const
{
...
outputStream << static_cast <tchar *="">;(Identifier.GetBuffer());
...
}

Identifier is a CString variable.

Following is error message:

error C2663: 'ATL::CSimpleStringT<BaseType,t_bMFCDLL>::GetBuffer' : 2 overloads have no legal conversion for 'this' pointer
1> with
1> [
1> BaseType=char,
1> t_bMFCDLL=true
1> ]

David Crow16-Jun-09 3:36

Hi DavidCrow, I am sorry. I tried to vote "5". But I hited the "1"

16-Jun-09 3:36

transoft wrote:
outputStream << static_cast ;(Identifier.GetBuffer());

Assuming Identifier is a CString object, this should suffice:

outputStream << Identifier;

transoft16-Jun-09 4:06

transoft

16-Jun-09 4:06

Sometime I am in hurry to fix something, this fix I should try myself. Thank you very much for your answer.

Best regards,

Re: Access denied to file

CPallini16-Jun-09 3:07

CPallini

16-Jun-09 3:07

Usually GetBuffer is not needed when you need a const.
Moreover, you need explicit, written authorization by Mark Salsbery, before using GetBuffer... Roll eyes | :rolleyes:

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-- Alfonso the Wise, 13th Century King of Castile.

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-- Iain Clarke

[My articles]

Access denied to file

hb_harshad16-Jun-09 2:25

hb_harshad

16-Jun-09 2:25

I have a file on NTFS drive, when I try to shift + delete that file I get a message access denied. I also checked ACL for that file in which administrator have full control on that file. I also tried to modify security attributes of that file. But every thing is disabled on security tab. When I try to take ownership of file I got message “You only have permission to view the current owner of the file”. (In this case it is Administrators group). I have logged in as an Administrator (which is member of Administrators group) but still I am not able to delete it.

I insured that the file is not loaded in memory, nor it is locked by any other process (I insured it through procmon.exe).

I thought explorer.exe might not have sufficient privileges to deal with that file so I create application having SE_TAKE_OWNERSHIP, SE_BACKUP_NAME and SE_RESTORE_NAME privileges and now try to get access rights or taking ownership of that file but still not get succeed in it.

So please let me know how to delete that file programmatically.

Thanks in advance.

David Crow16-Jun-09 2:50