C / C++ / MFC Discussion Boards

First Prev Next

Re: How to use function "OnDeleteitem(NMHDR* pNMHDR, LRESULT* pResult) " on ctreectrl?

Feng Qin3-Apr-02 19:14

Feng Qin

3-Apr-02 19:14

Thanks, I got it Smile | :)

I'm amumu, and you?

win32 app with msg loop but no window

Dorion3-Apr-02 16:53

Dorion

3-Apr-02 16:53

Ive looked through here and the general concensus is that it is not possible to have an application with a msg loop but no window. Just wanted to see if anyone knows of a way around this.

Havent had much luck with SetWindowsHookEx If anyone knows where I can look for some examples using this function Id appreciate it.

Im just experimenting .. nothing particular. So far Ive been able to obtain a DC for the display and draw on it but I need to be able to process mouse input.

Id rather find a way to do so with out resorting to hiding windows..
Thats why Im thinking using SetWindowsHookEx in a dll might be the answer.

Any thoughts?

Re: win32 app with msg loop but no window

Joaquín M López Muñoz3-Apr-02 19:04

Joaquín M López Muñoz

3-Apr-02 19:04

Ive looked through here and the general concensus is that it is not possible to have an application with a msg loop but no window.

On the contrary, it is perfectly possible to have an app with a message loop and no windows at all. The following is an example including a Windows timer that terminates the app in 5 seconds:

#include <windows.h>
 
static UINT ending_timer=0;
static VOID CALLBACK ending_timer_proc(HWND,UINT,UINT,DWORD)
{
  PostQuitMessage(0);
}
 
int main(void)
{
  MSG msg;
 
  PeekMessage(&msg,NULL,0,0,PM_NOREMOVE);
 
  ending_timer=SetTimer(0,0,5000,(TIMERPROC)ending_timer_proc);
  
  while(GetMessage(&msg,NULL,0,0)!=0){
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  }
 
  KillTimer(0,ending_timer);
   
  return 0;
}

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Disabling "Ready" & Other Auto Status Bar Updates :: MFC

valikac3-Apr-02 16:03

valikac

3-Apr-02 16:03

Hi.

Is there a way to disable the auto status bar update on pane 1? For example, you will see "Ready" in the first pane of the status bar when the program first starts (single-document using AppWizard). I need to use pane 1 of the status bar for something. I would like to disable the auto status bar update (system update).

Thanks,
Kuphryn

Getting Size & Location of ChildView :: MFC

valikac3-Apr-02 14:26

valikac

3-Apr-02 14:26

Hi.

I am using AppWizard single-document type setup. I need to get the rectange of the ChildView. All I am trying to do is change the background color of the ChildView. So ineed to get the exact size and location of the ChildView related to the MainFrame. I tried using this:

-----
CWnd *pWnd = AfxGetMainWnd();
CRect rectCView;
pWnd->get(rectCView);
CBrush *pOldBrush, newBrush(RGB(0, 0, 0));
CDC *pDC = pWnd->GetDC();
pOldBrush = pDC->SelectObject(&newBrush);
pDC->Rectangle(rectCView);
pDC->SelectObject(pOldBrush);
pWnd->ReleaseDC(pDC);
-----

The problem with the code segment above is that it repaint everything inside the MainFrame including the toolbar and statusbar. I would like it to paint the ChildView.

Thanks,
Kuphryn

Re: Getting Size & Location of ChildView :: MFC

Prem Kumar3-Apr-02 15:00

Prem Kumar

3-Apr-02 15:00

Paint it inside the Child View.
That would be much easier and correct,
ensuring repainting of the child view
will retain the bkcolor.

Re: Getting Size & Location of ChildView :: MFC

valikac3-Apr-02 16:01

valikac

3-Apr-02 16:01

Okay. Thanks.

Kuphryn

Trivial File Transfer Protocol

MarkPQ3-Apr-02 13:30

MarkPQ

3-Apr-02 13:30

Hi All,

I have a device I need to communicate with using TFTP (not to be confused with FTP). There is a windows NT command line program that works with it but I was wondering if there are any Functions or API's available to use in C++ that anyone knows about??

Otherwise would it be reasonable just to run the tftp.exe program from my C++ application? I think using CreateProcess or WinExec should work for this but I'm not too sure how yet

Thanks for any advice you may have
-Mark

Re: Trivial File Transfer Protocol

Jon Hulatt3-Apr-02 21:13

Jon Hulatt

3-Apr-02 21:13

Trivial FTP is a pretty simple protocol. You could implement it yourself. Find the correct RFC for it's specification.

Also, probably not relevant, but Cisco have a whole bunch of TFTP tools(their routers flash via TFTP)

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

Best method for creating a Wizard w/ VC++ and MFC?

Robert Mooney3-Apr-02 13:07

Robert Mooney

3-Apr-02 13:07

Is there a simple way to use ONE dialog for a dialog-based application, yet still be able to maintain each screen separately in the dialog editor? It seems most wizards use a single dialog-- yet creating nice looking dialogs from scratch (i.e. without the dialog editor) is a complete pain.

An example of a wizard that appears to use one dialog in its wizard is Winzip. I believe InstallShield has a similar appearance.

Right now I am creating separate classes for each dialog; calling EndDialog() when the user presses NEXT, and then creating the next dialog. This does not appear to be standard, and sticks out like a sore thumb.

Any help would be appreciated. Big Grin | :-D

- Rob

Re: Best method for creating a Wizard w/ VC++ and MFC?

Derek Waters3-Apr-02 15:56

Derek Waters

3-Apr-02 15:56

If you're using MFC, you might want to have a look at CPropertySheet and SetWizardMode. Basically you can maintain your dialog templates separately, and create a CPropertyPage-derived class for each one. Then you simply add each Page to your Sheet, SetWizardMode, and away you go. Much easier than rolling your own, methinks...

Hope this helps.

------------------------
Derek Waters
derek@lj-oz.com

SHGetFileInfo and icons... problems with .HTML files

Roman Nurik3-Apr-02 12:40

Roman Nurik

3-Apr-02 12:40

how come when i try to use SHGetFileInfo (code below) to get the small icon of an HTML file, it instead returns the small icon of a file with the little windows icon in it, as if there was no file association for .HTML files?

i'm using Win2K and IE6 (doesnt work on IE5) either

NOTE: this happens sparadically (did i spell that right?), sometimes it works and sometimes it doesn't, it seems awfully random...

NOTE 2: i tried 2 ways, both are shown below:

method 1:

SHFILEINFO fInfo; memset(&fInfo,0,sizeof(fInfo));
SHGetFileInfo("C:\\somefile.html",0,&fInfo,sizeof(SHFILEINFO),SHGFI_ICON | SHGFI_SMALLICON);

return fInfo.hIcon;

method 2:

SHFILEINFO fInfo; memset(&fInfo,0,sizeof(fInfo));
HIMAGELIST hImages = (HIMAGELIST)SHGetFileInfo("C:\\somefile.html",0,&fInfo,sizeof(fInfo),SHGFI_SYSICONINDEX | SHGFI_SMALLICON);

return ImageList_GetIcon(hImages,fInfo.iIcon,ILD_TRANSPARENT);

-Roman

Re: SHGetFileInfo and icons... problems with .HTML files

Prem Kumar3-Apr-02 12:54

Prem Kumar

3-Apr-02 12:54

Some times the SysIconIndex does behave like that.
Try rebooting the machine and check once again.

Re: SHGetFileInfo and icons... problems with .HTML files

Roman Nurik3-Apr-02 12:52

Roman Nurik

3-Apr-02 12:52

the problem is, this happens consistently on several computers i have (and i do keep my computers tidy)

so i think it's some problem w/ win2k or something w/ my code... MS's InterDev seems to show the HTML icon perfectly... its gotta be something w/ my methods

-Roman

Re: SHGetFileInfo and icons... problems with .HTML files

Roman Nurik3-Apr-02 13:36

Roman Nurik

3-Apr-02 13:36

ok, it seems CoInitialize() and CoUninitialize() weren't being called... it works now hehe

final snippet:

HICON GetIconForFile(CString strPath, BOOL bLargeIcon)
{
	CoInitialize(NULL);
	SHFILEINFO fInfo; memset(&fInfo,0,sizeof(fInfo));
	SHGetFileInfo(strPath,0,&fInfo,sizeof(SHFILEINFO),
		SHGFI_ICON | (bLargeIcon ? SHGFI_LARGEICON : SHGFI_SMALLICON));
	CoUninitialize();

	return fInfo.hIcon; // must be eventually destroyed by calling function
}

-Roman

Re: SHGetFileInfo and icons... problems with .HTML files

Prem Kumar3-Apr-02 14:57

Prem Kumar

3-Apr-02 14:57

RomanNY wrote:
CoInitialize(NULL); SHFILEINFO fInfo; memset(&fInfo,0,sizeof(fInfo)); SHGetFileInfo(strPath,0,&fInfo,sizeof(SHFILEINFO), SHGFI_ICON | (bLargeIcon ? SHGFI_LARGEICON : SHGFI_SMALLICON)); CoUninitialize(); return fInfo.hIcon; // must be eventually destroyed by calling function

probably using the CoInitialize & CoUninitialize in the App Class is
a much better approach.

Re: SHGetFileInfo and icons... problems with .HTML files

Roman Nurik3-Apr-02 15:04

Roman Nurik

3-Apr-02 15:04

good point. Smile | :)

ah screw it who needs efficiency anyway? thanks for the comment, you're 100% right

-Roman

How should i aproch this?

SilverShalkin3-Apr-02 12:22

SilverShalkin

3-Apr-02 12:22

Ok,... I want to program a Game Engine, "Take note that this engine is not going to be a 3D Game Engine yet a 2D engine" I want this engine in a Windows format. I want to have a grid of squars, and a toolbar full of pictures for i can place the pictures on the squars to make an Role Playing Game map.

What is the bast way of starting this project? Should i study in MFC? or program in a windows format from win32 application?

Thanks for your help, and opinions!

~SilverShalkin

Rose | [Rose]

When the programming gets tuff Rose | [Rose]

The programmer gets tuffer? Rose | [Rose]

Or falls behind and becomes Rose | [Rose]

brain dead i suppose Smile | :)

Re: How should i aproch this?

Paul M Watt3-Apr-02 13:05

Paul M Watt

3-Apr-02 13:05

I think you should program with whatever frame work that you are most comfortable with, because after all, what your are programming is a GUI, not really the game yet. And even when you do program your game, it will not require the same type of processing power as a first-person shooter.

I would definitely look at MFC or WTL because they offer nice support for toolbars and treeview and the other types of windows that you will probably use. These things can be very tedious with raw Win32 SDK programming.

Re: How should i aproch this?

SilverShalkin3-Apr-02 13:17

SilverShalkin

3-Apr-02 13:17

That is exactly what i wanted to know, thankyou! also one more question...

kilowatt wrote:
I would definitely look at MFC or WTL

what is WTL? I know what MFC is... And what one of these would be best to learn?

Thanks again

~SilverShalkin

Rose | [Rose]

I say read on and dont Rose | [Rose]

let the mountains of info Rose | [Rose]

confuse you! Smile | :)

Re: How should I approach this?

Paul M Watt3-Apr-02 14:29

Paul M Watt

3-Apr-02 14:29

WTL is the Windows Template Library. It is an extension to ATL. WTL is a set of wrappers around most of the Win32 API functions that are used for windowing. WTL is very lightweight, and it is designed with the same template paradigm that ATL is.

The main drawback with WTL is that there is no official documentation from Microsoft, so in order to use and learn it you will need to use any examples that you can find on the internet. There is a good two part series at www.sellsbrothers.com. In order to get WTL you will need to goto Microsoft.com to download it.

I prefer WTL, because it is closer to the operating system, and you can pick and choose the pieces that you want to use. However with MFC, there are plenty of books, documentation, and it has a lot more features.

Good Luck

Re: How should I approach this?

Tim Smith3-Apr-02 14:43

Tim Smith

3-Apr-02 14:43

WTL is GOD!!! Smile | :)

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

MFC or WTL, which is better?

SilverShalkin3-Apr-02 14:28

SilverShalkin

3-Apr-02 14:28

Which one of these are better, "by opinion" for programming a 2D RPG game?

Thanks

~SilverShalkin

Re: MFC or WTL, which is better?

Tim Smith3-Apr-02 14:42

Tim Smith

3-Apr-02 14:42

That is really hard to say.

IMHO, WTL has less baggage. After all, I doubt you will need MFC's document stuff.

Tim Smith

I know what you're thinking punk, you're thinking did he spell check this document? Well, to tell you the truth I kinda forgot myself in all this excitement. But being this here's CodeProject, the most powerful forums in the world and would blow your head clean off, you've got to ask yourself one question, Do I feel lucky? Well do ya punk?

Hard desicion here :)

SilverShalkin3-Apr-02 15:22

SilverShalkin

3-Apr-02 15:22

Ok,... i was going to do everything in MFC, but because of Tim Smith's view of WTL which is, if you didnt see "WTL IS GOD! Smile | :)

" and this recent file from Kilowatt, where it says that MFC has allot of documentation that i wouldnt really need... I think im going to give WTL a try Smile | :)

Ill be asking questions soon, i warn thee Smile | :)

While im here, WTL has similer coding to win32app?

Thanks for your help!

~SilverShalkin

Rose | [Rose]

Clear skies are better to look at Rose | [Rose]

then stormy ones Smile | :)

Last Visit: 31-Dec-99 18:00 Last Update: 8-Jun-24 20:11

Refresh

ᐊ Prev 1...17179 17180 17181 171821718317184 17185 17186 17187 17188 Next ᐅ

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