Re: special characters in static text - C / C++ / MFC Discussion Boards

8-Feb-02 2:24

Hi,
I had set dc.SetBkMode(TRANSPARENT); in OnPaint() function.In OnLButtonDown() function i will hide some controls & display some new controls. But it never hides the controls eventhough i had written Invalidate().
But if i minimise & maximise the window.it is proper.
Could anyone tell me what is wrong?
Neha

Re: SetBkmode()..

Roger Allen8-Feb-02 3:16

Roger Allen

8-Feb-02 3:16

Anonymous wrote:
dc.SetBkMode(TRANSPARENT); in OnPaint()
This call will only affect the Device Context for the extent of the OnPaint handler. So I don't think it would do what you want. You need to make use of the ShowWindow() function using SW_SHOW or SW_HIDE as parameters on the windows you want to show/hide.

Roger Allen
Sonork 100.10016

If I'm not breathing, I'm either dead or holding my breath.
A fool jabbers, while a wise man listens. But is he so wise to listen to the fool?
Please step to the rear of the car and make room for more victims. - John Simmons the Outlaw programmer, 1st Feb 2002, in the lounge

Re: SetBkmode()..

8-Feb-02 16:56

One more thing was i was returning TRUE inOnERaseBKGnd()..

Creating a Region from a bitmap

Jon Hulatt8-Feb-02 2:22

Jon Hulatt

8-Feb-02 2:22

I need to create a CRgn for my window which correlates to a bitmap i'm painting for an odd shaped non-client area.

It there built in functionality to create a region, say, from a 2 color bitmap?

The only way I can think of to implement it is to create a region by combining regtangles of 1 pixel size, and walking through every pixel in my bitmap. But to me, this sounds like a sh!t way of doing it; surely theres a better way?

Any one got any pointer?

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: Creating a Region from a bitmap

Stan Shannon8-Feb-02 2:36

Stan Shannon

8-Feb-02 2:36

If I understand your question, I seem to remember doing something like this in the past...

Simply select the region into the dc...

SelectClipRgn( hdc,hrgn )

Than all you have to do is blt the bitmap into the dc, it should draw only in the selected region.

"Thank you, thank you very much" Elvis.

Re: Creating a Region from a bitmap

Joaquín M López Muñoz8-Feb-02 2:32

Joaquín M López Muñoz

8-Feb-02 2:32

You might want to have a look at Jean-Edouard Lachand's article Converting a bitmap to a region .

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

special characters in static text

8-Feb-02 1:51

Hi,
I have a VC++ application where I have to place an Ohms icon inside the static text control.

Any idea how to do it ?

Confused | :confused:

Re: special characters in static text

Roger Allen8-Feb-02 3:20

Roger Allen

8-Feb-02 3:20

1. Make sure that when the string is displayed the correct character set is used.
2. The Ohms character in the OEM character set is at position 234. You can insert into your text by typeing Alt + 0234 or as an escape sequence of \352 (in octal)

Roger Allen
Sonork 100.10016

If I'm not breathing, I'm either dead or holding my breath.
A fool jabbers, while a wise man listens. But is he so wise to listen to the fool?
Please step to the rear of the car and make room for more victims. - John Simmons the Outlaw programmer, 1st Feb 2002, in the lounge

Re: special characters in static text

8-Feb-02 22:07

Thanks for your reply.
I was able to solve the problem of typing Micro as in "µFarads" (Alt + 0181).

But in VC++ editor the default character set is ANSI. So when I type Alt + 0234 I get "ê".
How do I change the character set to DOS in the VC++ editor so that I can get the Ohms character ??

no more debugging FAQ.

8-Feb-02 1:43

Resizable arrays?
Can any one tell me how do you make a resizable array.
Our Instructor wants us to start an array of size 1. and just grows as you keep adding stuff to it.(it does not have to shrink).

Thanks

Re: no more debugging FAQ.

Atul Dharne8-Feb-02 2:10

Atul Dharne

8-Feb-02 2:10

Use the vector class

#include<vector>
#include <iostream>

using std::vector;
using std::cout;
using std::endl;

int main()
{
vector<int> reszarr(1); //create a single element int vector
//whenever you want to put in an extra value it goes on resizing
reszarr.push_back(20); //here 20 is element number 2
reszarr[0] = 10; //populate the first element
//To display contents of reszarr
for(int count = 0;count < reszarr.size();++count)
cout << "Element Number: " << count+1 << " " << reszarr[count] << endl;
return EXIT_SUCCESS;
}

//for displaying the elements you can also use a iterator
#using namespace std;

vector<int>::iterator inIter;
for(inIter = reszarr.begin();inIter != reszarr.end();++inIter)
cout << *inIter << endl;

Atul

Sonork ID : 100.13714 netdiva

Re: no more debugging FAQ.

marouane miftah el kheir8-Feb-02 3:42

marouane miftah el kheir

8-Feb-02 3:42

I am not supposed to include anything for this project
that's why i have to create my own resizable array. so i can't use the vector class from the lib.
so again.
Can you tell me how do you make a resizable array?

Thanks

Re: no more debugging FAQ.

8-Feb-02 3:42

Re: no more debugging FAQ.

Volodya Orlenko8-Feb-02 4:04

Volodya Orlenko

8-Feb-02 4:04

Use realloc function.

Example:

<br />
char * flexBuff;<br />
flexBuff = (char *)malloc(1); <font color=green><nobr>// you wanted 1 element initially</nobr></font><br />
flexBuff[0] = 'a';<br />
flexBuff = (char *)realloc((void *)flexBuff, 10);<br />
<font color=green><nobr>// flexBuff[0] still contains 'a', and you have 9 bytes more allocated</nobr></font><br />

Volodya Orlenko,
orlenko [at] hotmail [dot] com

Re: no more debugging FAQ.

Nish Nishant8-Feb-02 4:16

Nish Nishant

8-Feb-02 4:16

Hi Marwan

Are you the same guy as marouane miftah el kheir ?

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Re: no more debugging FAQ.

Atul Dharne8-Feb-02 4:37

Atul Dharne

8-Feb-02 4:37

or are you'll twins?;P Big Grin | :-D

Just kidding. Anyways it is a valid point are you'll both the same? And Marwan? Is it a shortened form of anything?
Have you troubled your project giver? Smile | :)

Is that the reason why he is troubling you??

Just a few questions <marquee direction="LEFT" behavior="ALTERNATE" scrolldelay="1" scrollamount="20">zippedpast me...

Atul

Re: no more debugging FAQ.

Christian Graus8-Feb-02 8:03

Christian Graus

8-Feb-02 8:03

I'd recommend a class which creates an array that resizes by some sensible amount, keeps track of how much of it is used ( i.e. allocates more memory than it needs instead of allocating every time ), and then creates a new array using new when needed, and copies it across, deleting the old one which is too small. I would not use C functions such as malloc, even though new calls malloc internally.

I believe that is how vector works.

Christian

I have come to clean zee pooollll. - Michael Martin Dec 30, 2001

Picture the daffodil. And while you do that, I'll be over here going through your stuff.

Main Frame Resizing Problem

Paul A. Howes8-Feb-02 0:20

Paul A. Howes

8-Feb-02 0:20

All,

I am working on a simple application, using the WTL. The only child of the main window is a subclassed CEdit control. I have handled the WM_NCCALCSIZE message in the CEdit control to lock its size to 80 characters by 24 characters.

The problem that I need help with is that that main frame is always the "windows default" size. I would like the client area of the main frame to be the exact size of the child window. I tried to handle WM_NCCALCSIZE in the main frame class, but alas, it is called before WM_NCCALCSIZE and WM_CREATE in the child window.

The effect that I am trying to achieve is simliar to the appearance of the GVim program, if that is of any help.

Thanks!

--
Paul

"I drank... WHAT?"

Re: Main Frame Resizing Problem

Joaquín M López Muñoz8-Feb-02 1:46

Joaquín M López Muñoz

8-Feb-02 1:46

Look at the implementation of CScrollView::ResizeParentToFit (at <VisualStudio>\vc\mfc\src\viewscrl.cpp), maybe you can copy and paste that code to your project to achieve a similar effect.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

an advice for a book

Gérald Mercet7-Feb-02 21:32

Gérald Mercet

7-Feb-02 21:32

If i want to learn how i could do an application in vc++ which will be used in excel; for example my application need to catch data in excel, so for that it has to read into an array of value to catch input parameters for member method. I have heard that if i want to use regular dll i won't be able to use c++ functions. is it true?
And in a last time if i use dlls, must i use "export" method or some method which call the function defined in vc++ from vba?

so i would like to know if i could find help and samples in books or if someone could show me how to do?

thanks in advance for your answers

gerald

Re: an advice for a book

Christian Graus7-Feb-02 21:38

Christian Graus

7-Feb-02 21:38

CUJ had an article about a year ago on doing this through COM, you essentially create a COM object which manipulates an Excel table. I can't remember the details, but it's probably online at www.cuj.com

Christian

I have come to clean zee pooollll. - Michael Martin Dec 30, 2001

Picture the daffodil. And while you do that, I'll be over here going through your stuff.

Re: an advice for a book

Atul Dharne7-Feb-02 22:55

Atul Dharne

7-Feb-02 22:55

Check these out
HOWTO: Use MFC to Automate Excel and Obtain an Array from a Range
HOWTO: Use MFC to Create a Microsoft Excel Chart

Atul

PS: Search Google for COM Automation Excel Data

Sonork ID : 100.13714

Re: an advice for a book

Gérald Mercet8-Feb-02 2:07

Gérald Mercet

8-Feb-02 2:07

i don't want to automate excel i would like to use excel as you could use it with vb for application in the sense that from a cell you could call the function you need which have been initially implemented in vc++.
So do you think that i could information and samples for my application?

thanks

gerald

Re: an advice for a book

Atul Dharne8-Feb-02 4:26

Atul Dharne

8-Feb-02 4:26

You can call a DOS program using the VBA Shell statement in sync or async.
An application can be called using the VBA AppActivate statement.
So you can implement your automation functions in VC++ apps.

Hope it helps...

Atul

Sonork ID : 100.13714

Visual C++ documentation-where to find?

nikoladsp7-Feb-02 19:39

nikoladsp

7-Feb-02 19:39

If anyone know where i can find some guides or tutorials
about ucing vc6.0++ (windows messages,tree controls DAO,..);
plese ,contact me.
Confused | :confused:

nikola

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