C / C++ / MFC Discussion Boards

Re: What's wrong with this way of enumerating filters?

Joaquín M López Muñoz15-Nov-02 8:41

15-Nov-02 8:41

Wait... Seems you're constructing an IGraphBuilder and then enumerating its filters, but an empty IGraphBuilder won't have any. Try using for instance IGraphBuilder::RenderFile on some .avi prior to enumeration.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: What's wrong with this way of enumerating filters?

Redeemer-dk15-Nov-02 13:49

Redeemer-dk

15-Nov-02 13:49

Thankyou i'll try that. But do you know if there's a way to enumerate all the available filters on the current machine?

-Rune Svendsen

Apps Icon

carpediem15-Nov-02 7:21

carpediem

15-Nov-02 7:21

I am trying to do something and the part that sounds the simplest is turning out to the hardest. I am putting a button on a toolbar. What this button will do is allow a user to set the button up to point to an executable. For instace, if the user wants this button to launch solitaire, it goes through the process of having the user find the .exe file. This is simple. The hard part is I am trying to use the icon from the .exe file as the bitmap for my button. And I cannot figure out how to do it. Any ideas? I have looked on this website but haven't found anything, it might be that I don't know where to look exactly...

Re: Apps Icon

Joaquín M López Muñoz15-Nov-02 7:36

Joaquín M López Muñoz

15-Nov-02 7:36

Look for ExtractIcon in the documentation.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Apps Icon

Roger Stewart15-Nov-02 10:09

Roger Stewart

15-Nov-02 10:09

In addition to Joaquín's suggestion, you may also want to look at ExtractAssociatedIcon documentation.

Roger Stewart
"I Owe, I Owe, it's off to work I go..."

Dialog app doesn't draw all objects correctly or consistantly

jimNLX15-Nov-02 7:05

jimNLX

15-Nov-02 7:05

I have a dialog app that uses timers. It updates fine at first, but then after running for a while it some times doesn't draw all the objects that are on the page. Also, the drop down arrows becomes 6s and some of the buttons just completely disappear. I thought there maybe the system was too busy, but I?ve looked and there is lots of idle time.

Anybody have any clues as to why this is happening? I?m hoping I don?t have to take over drawing each and every object, but if I have to how?

Thanks all!

Re: Dialog app doesn't draw all objects correctly or consistantly

Joaquín M López Muñoz15-Nov-02 7:09

Joaquín M López Muñoz

15-Nov-02 7:09

Almost surely you're leaking GDI objects (could be fonts, DCs, brushes, etc.) Follow this trail.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Dialog app doesn't draw all objects correctly or consistantly

jimNLX15-Nov-02 8:09

jimNLX

15-Nov-02 8:09

I really haven't done anything with DC or painting or really any kind of handling of drawing.

One think though...I'm using ButtonST from this site...any problems with that?

HELP!!!!!!

Re: Dialog app doesn't draw all objects correctly or consistantly

Joaquín M López Muñoz15-Nov-02 8:28

Joaquín M López Muñoz

15-Nov-02 8:28

I don't think it is CButtonST, which seems a thoroughly tried control. What exactly are you doing in your OnTimer? If the code for this handler is short enough maybe you could post it here.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Dialog app doesn't draw all objects correctly or consistantly

Anonymous15-Nov-02 8:59

Anonymous

15-Nov-02 8:59

This is one of the smaller timers that I use. Most of the timers are like this one with the exception that they have many more items to check.

if(nIDEvent == 1122)
{
for(short i = Temp_RX; i<(Perm_DR+1); i++)
{
m_mcontrol[i].m_MouseOnButton = iControlstatus[i];
m_mcontrol[i].Invalidate(TRUE);
m_mcontrol[i].UpdateWindow();
}

}

Thanks for the help, much appriciated.

Re: Dialog app doesn't draw all objects correctly or consistantly

Joaquín M López Muñoz15-Nov-02 9:04

Joaquín M López Muñoz

15-Nov-02 9:04

This is weird! To make sure the problem does not lie in CButtonST, you might want to replace it (for testing purposes) with standard CButton (you'll have also to comment out the code specifically related to CButtonST). If the error persists, the problem is elsewhere.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

create process

big papa15-Nov-02 6:20

big papa

15-Nov-02 6:20

Hello
I'm trying to run a program from inside my program. I thought that createprocess would be the best way to go. But i'm having a hard time trying to figure it out please help OMG | :OMG:

Re: create process

Redeemer-dk15-Nov-02 7:47

Redeemer-dk

15-Nov-02 7:47

try this:

STARTUPINFO siInfo;
PROCESS_INFORMATION piInfo;

siInfo.cb = sizeof(STARTUPINFO);
siInfo.lpReserved = 0;
siInfo.lpDesktop = NULL;
siInfo.lpTitle = NULL;
siInfo.dwFlags = STARTF_USESHOWWINDOW;
siInfo.cbReserved2 = 0;
siInfo.lpReserved2 = NULL;

CreateProcess("F:\\path\\program.exe", "", NULL, NULL, false, NORMAL_PRIORITY_CLASS, NULL, "F:\\path\\", &siInfo, &piInfo);

Re: create process

big papa15-Nov-02 8:19

big papa

15-Nov-02 8:19

thank you i'll try it. what include statements do i need to show Big Grin | :-D

Richard

Re: create process

Shay Harel16-Nov-02 17:29

Shay Harel

16-Nov-02 17:29

Have you ever tryed:

WinExec ("CMD.EXE /C PROGRAM_NAME.EXE",SW_SHOW);

Much easier

cursor change AGAIN AGAIN

Dennis L15-Nov-02 5:09

Dennis L

15-Nov-02 5:09

Sorry if i have bothered you so much, but i'm in deep thought on how to change the cursor when the mouse pointer is on a button or on a notified picture...

here's a part of my code ...

case WM_SETCURSOR:
{
HWND hwndStaticw = (HWND) lParam;

if (hwndStaticw = GetDlgItem(hwnd, IDC_WL))
{
SetCursor(LoadCursor(hInstance, MAKEINTRESOURCE(IDC_CURSOR1)));
break;
}
}
return TRUE;

where IDC_WL is the notified picture,

What am i doing wrong... i thing a lot! Please Help...
I'm trying to be calm....

Re: cursor change AGAIN AGAIN

Ernesto Perales Soto15-Nov-02 6:40

Ernesto Perales Soto

15-Nov-02 6:40

Where is this code implemented?
Seems like are you assuming that lParam holds a handle to the control below the cursor and, if my mind serves me right, this is not how this message works..

Confused | :confused:

eperales

VC++ Dialog Editor list application

alpu15-Nov-02 3:40

alpu

15-Nov-02 3:40

Hello ,
I want to create an application similar to the VC++ Dialog Editor.
Can anyone please point me the location of it.

Thanks in advance
Cheers

Re: VC++ Dialog Editor list application

NormDroid15-Nov-02 8:44

NormDroid

15-Nov-02 8:44

There's a very basic version in MSDN that does the jon it's written in straight Win32 so it will need porting, also try this:

http://www.microsoft.com/msj/defaultframe.asp?page=/msj/0499/atl3activex3/atl3activex3.htm&nav=/msj/0499/newnav.htm[^]

Enable printing option

mr200315-Nov-02 3:32

mr2003

15-Nov-02 3:32

Hi I would like to know how can I enable printing options in my application.
It basically has to print a BMP file and bunch of lines on it.

thanks

Ehsan Behboudi

Re: Enable printing option

NormDroid15-Nov-02 8:45

NormDroid

15-Nov-02 8:45

DibView? look at MSDN

only one instance of app

mirex15-Nov-02 2:48

mirex

15-Nov-02 2:48

Hello

i'd like to add a feature to my viewer, that if it is ran with a parameter, and the app is already running that it would not run another time but it would send an param to the 1st one. I have no idea how to make it, and i could not find any article about it.

Something like IE when you click on jpg files, all of them open in one window instead of opening a new one for each pic.

thank you in advance

mirex

Re: only one instance of app

Navin15-Nov-02 2:52

Navin

15-Nov-02 2:52

Here's an article that can help you get started... you can probably adapt it for your needs.

Avoiding Multiple Instances of an Application[^]

Even a broken clock is right twice a day.

Draw current background in OnPaint?

Anonymous15-Nov-02 2:42

Anonymous

15-Nov-02 2:42

Hi,
I draw a rectangle in my ownerdraw control. I need to fill it with the current background, a brush I guess (it's for resizing or ungly paint artifacts can stay on my dialog). How would I clear area with current background? ....I already have my DC and and the client rectangle.

CBrush brBackground(??????); //help here
dc.FillRect(pRect, &brBackground);
/* paint rectangle now*/

Thx

Re: Draw current background in OnPaint?

Paul M Watt15-Nov-02 4:39

Paul M Watt

15-Nov-02 4:39

Use the WS_EX_TRANSPARENT style for your control. It will make sure that all of the controls below yours gets painted first.

Then you will need to override your WM_ERASEBKGND message to not do anything. Simply return TRUE in the handler for this function. Then in your paint routine, do what you wanted to do on the control.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

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