Multi-column ListBox - C / C++ / MFC Discussion Boards

Re: Boost regex (regular expressions) problem

Michael Dunn29-Dec-04 6:53

29-Dec-04 6:53

Does Boost support the (?:) syntax? I thought that was a Perl extension. If not, then that's probably throwing off the matching. Try removing the (?:) and see what happens.

--Mike--
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Linking problems when using libraries!

Dani10000128-Dec-04 12:59

Dani100001

28-Dec-04 12:59

I have a question about a linker error when including some libraries in my application.

This is what i have done:

First I have compiled the ximage.lib and png.lib as static libraries and I got no errors.

Then I have linked ximage.lib and png.lib to my application.

When I compile the application I get these linker errors:

ximage.lib(ximapng.obj) : error LNK2019: unresolved external symbol _png_read_row referenced in function "public: bool __thiscall CxImagePNG::Decode(class CxFile *)"

The png_read_row function is declared in the png.lib project, so how can I get these errors when both libraries compiled successfully?

Where should I look for the error, in the png.lib, or in the ximage.lib or should I use some magical setting in the application project?

I hope someone can tell me what I am missing!

Thanks, Dani

Re: Linking problems when using libraries!

C^hris L^osinger28-Dec-04 15:07

C^hris L^osinger

28-Dec-04 15:07

make sure you're putting any #includes from libpng inside extern "C" wrappers:

extern "C" {			 
#include "png.h"
}

Software | Cleek

Capture the Fn key on a laptop

sparker6228-Dec-04 9:32

sparker62

28-Dec-04 9:32

I'm writing a program that needs to capture the Fn key on my laptop, but have not been able to capture it. I've tried using of the keyboard hooking using SetWindowsHookEx, but it doesn't capture the key stroke. Any ideas?

Re: Capture the Fn key on a laptop

User 665828-Dec-04 9:35

User 6658

28-Dec-04 9:35

I recently read on google groups that it's not possible - i've tried to accomplish this recently, too. You'd need to write a very low level keyboard bios (or whatever, i don't know).

regards

modified 12-Sep-18 21:01pm.

Re: Capture the Fn key on a laptop

Dani10000128-Dec-04 12:38

Dani100001

28-Dec-04 12:38

Hi, I have done this in wince, but it should be the same:

Do you have any window or is it a background process?

If you do have a window, the window has to have focus!

You should check the exact messages send in the system using the SPY tool.

Anyway, I have managed to get the hook function to work in wince, but if another application is using the hook function, at least in wince, only one application can hook the keyboard so another call to the hook function will fail.

Try to use this code and put a breakpoint after the case WM_KEYDOWN and see if the WndProc captures the WM_KEYDOWN message.

If it does that check the wparam to see the value when you press the key, you might be looking for the wrong value in wparam that belong to your specifique key press!

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
HDC hdc;
int wmId, wmEvent;
PAINTSTRUCT ps;
TCHAR szHello[MAX_LOADSTRING];

switch (message)
{
case WM_KEYDOWN:

switch(wParam){
case 0x00000031:
OutputDebugString(L"Key_1 pressed \n");
break;
}
}

This is wince style so you have to change it a bit!

Try to get focus to your application in the beginning SetFocus(hWnd)!

I hope this help?

Cheers Dani

Status Bar

Anthony988728-Dec-04 8:44

Anthony9887

28-Dec-04 8:44

How can i create a CStatusBar on a CWnd Parent Window? It doesn't seem to work when I try it.

Thanks

Multi-column ListBox

Deian28-Dec-04 7:34

Deian

28-Dec-04 7:34

Hello,

Does anyone knows how to work with multi-column listbox, how to work with the columns and the data? any help or link is appreciated!

Thanks

Re: Multi-column ListBox

David Crow28-Dec-04 10:00

David Crow

28-Dec-04 10:00

Have you specified the LBS_MULTICOLUMN style?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Multi-column ListBox

Deian28-Dec-04 10:15

Deian

28-Dec-04 10:15

I will, but only after I figure out how to deal with the columns and the data Smile | :)

Re: Multi-column ListBox

David Crow28-Dec-04 10:21

David Crow

28-Dec-04 10:21

Deian wrote:
...but only after I figure out how to deal with the columns...

The listbox will not have columns without that style.

Deian wrote:
...and the data

There's nothing special about the items that are inserted into a listbox when multiple columns are involved. Use the LB_ADDSTRING message in either case.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

Re: Multi-column ListBox

User 665828-Dec-04 10:23

User 6658

28-Dec-04 10:23

If you want multi column please check the CListCtrl control

modified 12-Sep-18 21:01pm.

Re: Multi-column ListBox

Deian28-Dec-04 10:41

Deian

28-Dec-04 10:41

Well, I wanted to avoid using the CListCtrl, and I was curious on how to make it work. I don't have documentation about the functions involved in manipulating the columns, and dealing with data in the multi-column listbox.

Re: Multi-column ListBox

Rick York28-Dec-04 14:33

Rick York

28-Dec-04 14:33

The docs come with VC++ and are also available on-line : http://msdn.microsoft.com/library/en-us/vcmfc98/html/_mfc_clistctrl.asp[^]

routing information protocol (RIP) problem

Chuan^228-Dec-04 7:22

Chuan^2

28-Dec-04 7:22

can anyone pls help, i wan to retrieve the RIP header information using c++, anyway to do tis? how? Cry | :((

Re: routing information protocol (RIP) problem

David Crow28-Dec-04 10:03

David Crow

28-Dec-04 10:03

Have you read through RFC 1058?

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

HTML in VC++

Jalia28-Dec-04 7:22

Jalia

28-Dec-04 7:22

Can someone please help me, I am trying to program my own Html browser, i am new to VC++.
I have two problems.
1) Created a new project in VC++ using the CHTMLVIEW base class, but get error message when i delete all the File,Edit option from the IDR_MainFrame ( I dont want the option bar) "FAILED TO CREATE EMPTY DOCUMENT"

2) I imported a HTML file in the resource, Works fine using the LoadFromResource(IDR_HTML1) but i can not get the links in that page to work,(works fine in normal IE)

Is there a easy way to combine html pages with in the C++ project file??

Please ,Please help....;P

Re: HTML in VC++

Neville Franks28-Dec-04 9:16

Neville Franks

28-Dec-04 9:16

You will find lots of good reading about CHTMLView etc. here: http://www.beginthread.com/Contributor/Ehsan/ViewAllArticles[^]

eg. http://www.beginthread.com/Article/Ehsan/Advanced%20CHtmlView%20Hosting/[^]

I'm sure you will also find articles here at CP worth reading.

Surfulater (see sig) displays HTML pages using CHTMLView.

With enough time, patience and perserverance you can do anything you want. But if you are new to C++ you have a lot to learn I'm afraid.

Neville Franks, Author of ED for Windows www.getsoft.com and Surfulater www.surfulater.com "Save what you Surf"

Draggable Rectangle

poiut28-Dec-04 7:09

poiut

28-Dec-04 7:09

Since I am having problem using drawdragrect(can't get it to work with scrolling) I decided to draw my own draggable rectangle.

I did it with Rectangle and SetROP2(R2_XORPEN). But the problem with that is when I drag the rectangle would inverse the color thus fill the rectangle with black color. Any way around this?

I tried it with Lineto but it would also inverse the color when two line meet at the edge. I tried to set it so line wouldn't overlap but the problem with that it would actually create gap.

Now I am doing Polyline which seems to work. Is this how most people draw their draggable rectangle?

Connecting with IOCompletionPort

Menny Even Danan28-Dec-04 7:04

Menny Even Danan

28-Dec-04 7:04

Hello.
i'm trying to use IOCompletionPort while connecting to servers.

i have one client program which suppose to connect to alot of servers.
i want to do to connection with IOCompletionPort mechanism.

can anyone help me with it a bit?

i need some guidelines. my connecting is alway in blocking mode.

thanks

How to serialize CTreeCtrl?

Tanmay Sathe28-Dec-04 6:57

Tanmay Sathe

28-Dec-04 6:57

I want to serialize CMyTreeCtrl. This class is derived from CTreeCtrl. Can I serialize the whole tree? Confused | :confused:

MiKE

Eliminating Flickering when resizing a window

Member 148659428-Dec-04 6:52

Member 1486594

28-Dec-04 6:52

I need to eliminate flickering when resizing a derived CMDIChildWnd window that displays an image (already available in memory). I can display a series of images without flickering by opening all images in memory, and painting them from there (File access is done once only). However, I can't seem to get rid of flickering when resizing.
I tried modifying the OnPaint, OnSize, and OnSizing messages, but to no avail.

Please Help
Fayez

Re: Eliminating Flickering when resizing a window

SteveKing28-Dec-04 7:00

SteveKing

28-Dec-04 7:00

Try modifying OnErase() which erases the background.

Re: Eliminating Flickering when resizing a window

Member 148659428-Dec-04 7:26

Member 1486594

28-Dec-04 7:26

Thank you very much, that works perfect! BTW, I think it was the OnEraseBkgnd()

Auto-scroll a CDialog

DanYELL28-Dec-04 6:00

DanYELL

28-Dec-04 6:00

I have a dialog with vertical scroll bars and lots of
text and edit boxes. Any ideas on how to automatically
scroll down the dialog as the user is typing in
information? Or somehow, if the user is in a certain
edit box, that it scroll to center itself rather than
making the user scroll down?

Please, any response any one can give me will be greatly
appreciated.

Sincerely,
Danielle (an overworked graduate student)

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