Re: changing brush attributes at runtime - C / C++ / MFC Discussion Boards

markkuk3-Mar-06 12:18

3-Mar-06 12:18

Define a constructor for your struct that takes name, eye_color and height as parameters (and has default values for all of them).

struct person
{
    string name;
    int eye_colour;
    float height;
    person(const string& n = "" , int e = -1 , float h = 0.0F);
};
person::person(const string& n, int e, float h)
: name(n), eye_color(e), height(h)
{}

Now you can create new instances of person easily:

person* spouse;
string newpersonname;
cin.get(newpersonname, 15);
cin.ignore(16,'\n');
spouse = new person(newpersonname);

Re: std c++ structures

Peter Charlesworth3-Mar-06 12:29

Peter Charlesworth

3-Mar-06 12:29

Hmmm...
Does the second bit of code take 'spouse' as an example to make
'newpersonname' or does it erase 'spouse' in order to replace it
with 'newprersonname'?

Thanks anyways!

Does kernel driver can invoke GetLogicalDriveStrings()?

momer3-Mar-06 3:20

momer

3-Mar-06 3:20

GetLogicalDriveStrings() can be used to get system driver stirngs in user mode app,if it can be used in driver program to do the same thing?
Thanks!

changing brush attributes at runtime

pc_dev3-Mar-06 2:09

pc_dev

3-Mar-06 2:09

In my application i need to change brush attributes e.g color etc at run time,

consider following

CBrush b1;
b1.createSolidBrush(RGB(255,0,0));

now how can i change the color of same brushto green color?

An alternate option is to create new brush when it is needed and then destroy when its not, but this creation/destruction will slow down the prog, thats why i want to use only one brush and change its attributes as needed at run time

Thanks in advance Rose | [Rose]

Re: changing brush attributes at runtime

C^hris L^osinger3-Mar-06 2:15

C^hris L^osinger

3-Mar-06 2:15

pc_dev wrote:
An alternate option is to create new brush when it is needed

or create them both at the start of your app, and destroy them both at the end

Cleek | Image Toolkits | Thumbnail maker

[OT]

toxcct3-Mar-06 2:35

toxcct

3-Mar-06 2:35

hi Chris,

this has nothing to deal with the question you answered, but i wanted to know if you had received my mail, and if you have any particulier thoughts about it...

thanks,

v2.0

Re: [OT]

C^hris L^osinger3-Mar-06 3:03

C^hris L^osinger

3-Mar-06 3:03

hmmm... i don't think i did. i will check my Junk folders (my spam filter is a bit too aggressive sometimes)

Cleek | Image Toolkits | Thumbnail maker

Re: changing brush attributes at runtime

pc_dev3-Mar-06 3:26

pc_dev

3-Mar-06 3:26

Thanks for reply.

Chris Losinger wrote:
create them both at the start of your app, and destroy them both at the end

If there were only two brushes needed then I would do the same but in my case i can't tell how much brushes will be needed, eg 1000.

in above case the best option is to create on eand change its attributes at run time.

Re: changing brush attributes at runtime

C^hris L^osinger3-Mar-06 3:53

C^hris L^osinger

3-Mar-06 3:53

pc_dev wrote:
in above case the best option is to create on eand change its attributes at run tim

except that it's probably not possible to do that.

Cleek | Image Toolkits | Thumbnail maker

Re: changing brush attributes at runtime

Stephen Hewitt3-Mar-06 2:17

Stephen Hewitt

3-Mar-06 2:17

As far as I'm aware you don't - You create a new one.

Steve

Re: changing brush attributes at runtime

Gary R. Wheeler3-Mar-06 12:36

Gary R. Wheeler

3-Mar-06 12:36

Are you sure that creating/destroying the brush each time is that expensive? Try it and see how the program performs.

Software Zen: delete this;

Fold With Us![^]

Mouse hook

kk_mfc3-Mar-06 1:18

kk_mfc

3-Mar-06 1:18

Hi guys,

Can any one suggest me how i can write a very simple mouse hook?
suggest me some sample code.

Thanks,

Ram..

Re: Mouse hook

Naveen3-Mar-06 2:21

Naveen

3-Mar-06 2:21

use SetWindowHookEx as follows

SetWindowsHookEx( WH_MOUSE, MouseProc,0,0);

u should write a function write a function(here "MouseProc") with prototype

LRESULT CALLBACK MouseProc( int nCode,
WPARAM wParam,
LPARAM lParam
);

Now u will get all the mouse messages in the function "MouseProc".

The above hook only works inside ur application scope. For u to make the hook globel u should have to write the "MouseProc" in a dll. and pass the instance(obtained from LoadLibrary) as the third parameter to the SetWindowsHookEx function.

nave

Re: Mouse hook

kk_mfc5-Mar-06 18:44

kk_mfc

5-Mar-06 18:44

Hi Naveen,

Thanks..
As us said i am looking for a global mouse hook.
are there any rules for the dll like it should be a com outproc server or
is it enough to be ordinaly dll.

thanks and regards,
Ram

Re: Mouse hook

Naveen6-Mar-06 1:37

Naveen

6-Mar-06 1:37

an ordinary dll is enough.

nave

line count

caykahve3-Mar-06 1:06

caykahve

3-Mar-06 1:06

Hello,

I'm using MS Visual Studio .NET 2003.
how can I get the total line count of the whole project?

Thanks in advance

Re: line count

toxcct3-Mar-06 1:35

toxcct

3-Mar-06 1:35

see LineCounter project[^].

Re: line count

caykahve3-Mar-06 2:14

caykahve

3-Mar-06 2:14

Thanks. That was a very useful add-in.

Re: line count

Jack Puppy3-Mar-06 2:11

Jack Puppy

3-Mar-06 2:11

SourceMonitor

"My dog worries about the economy. Alpo is up to 99 cents a can. That's almost seven dollars in dog money" - Wacky humour found in a business magazine

Certification

arunperi3-Mar-06 1:04

arunperi

3-Mar-06 1:04

I wish to get certified in c++ and vc++ are there any exams for the same.

Can anyone pls. guide.

Arun.

Re: Certification

pc_dev3-Mar-06 3:32

pc_dev

3-Mar-06 3:32

cpp != vc

Re: Certification

David Crow3-Mar-06 3:52

David Crow

3-Mar-06 3:52

Start your search here. Check here, too.

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

"There is no death, only a change of worlds." - Native American Proverb

How to do complex window UI?

derek73-Mar-06 0:58

derek7

3-Mar-06 0:58

if use dialog, it is easy,because vc supply a dialog editor, you can design your UI very intuitionistic.

but for a complex UI for example vc6(not complex as that ,just a example)

how to do? Must I calculate the coordinate of control(position ,size etc...) by hard code?

Re: How to do complex window UI?

Maximilien3-Mar-06 2:32

Maximilien

3-Mar-06 2:32

yes, or use a CFormView on a SDI application.

Maximilien Lincourt
Your Head A Splode - Strong Bad

CListCtrl item height

Naveen3-Mar-06 0:51

Naveen

3-Mar-06 0:51

hi,
i have a listctrl with owner draw style. Is there any way to increase the row height of list control? I am using the report view in list control.

nave

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.