C / C++ / MFC Discussion Boards

Re: How to get the cursor position?

David Crow24-Aug-09 10:24

David Crow

24-Aug-09 10:24

Are you looking for SetCapture()?

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Re: How to get the cursor position?

Orchus25-Aug-09 3:03

Orchus

25-Aug-09 3:03

Hi,

Thank you for answering.
In this case I may have done something wrong it did not work...

case WM_MOUSEMOVE:
            //Set the position of the mouse in two textboxes (hX and hY)
    SetCapture(hWndTarget);
    TCHAR temp[256],temp2[256];
            long x,y;
    x=LOWORD(GetMessagePos());
    y=HIWORD(GetMessagePos());
        wsprintf(temp,_T("%d"),x);
    SetWindowText(hX,temp);
        wsprintf(temp2,_T("%d"),y);
    SetWindowText(hY,temp2);

Should this work?
I am running Windows 7 b7600 and VS2010 beta 1.

Thank you,

Re: How to get the cursor position?

David Crow25-Aug-09 3:06

David Crow

25-Aug-09 3:06

Call SetCapture() when your app first starts up.

Re: How to get the cursor position?

Orchus25-Aug-09 6:29

Orchus

25-Aug-09 6:29

Hi,

It did not work either, at the end of the InitInstance() function.
If you have a small sample and you have the time to share it I would really appreciate it.

Thanks,

P.S.: The documentation, http://msdn.microsoft.com/en-us/library/ms646262%28VS.85%29.aspx[^], says that it will not work in non client area. ???

Re: How to get the cursor position?

David Crow25-Aug-09 6:40

David Crow

25-Aug-09 6:40

Orchus wrote:
It did not work either...

Which means what exactly? Does SetCapture() return NULL? Are you not receiving any WM_MOUSEMOVE messages? Does the window handle belong to the current thread? Is it a foreground or background window?

Re: How to get the cursor position?

Orchus25-Aug-09 10:03

Orchus

25-Aug-09 10:03

When I move the window out of my application's area, the two textboxes stop displaying coordinates. The calculator window is sitting next to my application, plainly visible. If I give focus to the calculator, I also do not get any mouse_move message as the two textboxes are not displaying anything.

I also noticed that I do not get any notifications when the cursor is hovering controls in my app such as buttons or edit boxes.

I don't know if the window handle (calc.exe) belongs to the current thread.

Thank you for your time,

Is there a way to force VisualStudio to launch app to debug in non-admin mode on Vista?

WayneS24-Aug-09 7:41

WayneS

24-Aug-09 7:41

I always run VisualStudio as admin, but when I debug the application I am developing, I would like it to launch the app at the normal user privilege level. Is there any setting available for doing this? (I know I could launch my app, then attach the debugger, but I would like to avoid this to make debugging convenient for other members of my team.)

Thanks.

Wayne

How to select files in windows shell view

emmmatty124-Aug-09 6:25

emmmatty1

24-Aug-09 6:25

Hi,
In my app I need to set selection for files in windows explorer view. I just need to bring that blue background like the one we see when we click an item inside a folder. Please tell me how to do this using VC++.

Thanks,
J

black full-screen snapshot in win vista/7

NaNg1524124-Aug-09 5:04

NaNg15241

24-Aug-09 5:04

Hello.

I'm trying to capture a screen shot while in full-screen mode in a game. The game can use either Direct3D (directx) or OpenGL as its displaying driver. while trying to get the screenshot in both drivers (in fullscrteen mode) the image is black or unuseful. I'm aware that the problem is known, but I don't have any solution for it.

I'm searching for the solution to this problem in C\C++ (though other languages will do aswell). I've tried to use GDI+, use a robot for the printscreen (btw it doesn't work even without the robot) and a bit more options, and still no idea how to get a screenshot of the fullscreen game in win vista\7.

I'd appreciate any help.
Sincerely,
Me.

Re: black full-screen snapshot in win vista/7

NaNg1524126-Aug-09 19:41

NaNg15241

26-Aug-09 19:41

Has anyone figured out the problem atleast? has its name or any info about it?
It would really help me alot, thanks.

Dialog with custom control won't work with satellite DLL

Per G24-Aug-09 1:15

Per G

24-Aug-09 1:15

I use satellite DLL for localization purposes in my application. And loading the dll with AfxSetResourceHandle. This works fine for all of my dialogs that doesn't use a custom control.

For those with custom control the constructor is called but not OnInitDialog or DoDataExchange
And DoModal returns -1

Any suggestion?

Thanks.

Re: Dialog with custom control won't work with satellite DLL

Code-o-mat24-Aug-09 1:45

Code-o-mat

24-Aug-09 1:45

The system probably cannot create the custom control on your dialog. The custom control has to be registered before you can try to create a dialog which contains it, otherwise when the system gets to the custom control (when loading the resource and creating the dialog from it) and checks its class it won't find it among the known control/window classes and thus fail to create it which leads to the whole dialog creation process' fail.
Also check if you specified the right window class name in the resource editor for your custom control, if you forgot to do it or if you made a typo then you get the same result as above.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Dialog with custom control won't work with satellite DLL

Per G24-Aug-09 22:59

Per G

24-Aug-09 22:59

Ok, checked the window class name and it's not misspelled

But how do I check if my custom control is registered, I just know that if I place it "normal" resourcefile - not in the satellite file everything works fine

Re: Dialog with custom control won't work with satellite DLL

Code-o-mat24-Aug-09 23:15

Code-o-mat

24-Aug-09 23:15

So you say that if you have the same custom control in a resource inside a DLL, and you load the resource from the DLL and try to create the dialog, it fails, but if you have the very same resource in the exe, not in an external DLL, without otherwise changing anything on your code, it works? You said other dialogs which do not have the custom control on them work fine, you load these from the DLL too?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Dialog with custom control won't work with satellite DLL

Per G24-Aug-09 23:23

Per G

24-Aug-09 23:23

Yes that is correct and other dialogs in the satellite DLL works fine as long isn't any custom controls in it. I have also tried with an other custom control and I got the same result.

Re: Dialog with custom control won't work with satellite DLL

Code-o-mat24-Aug-09 23:32

Code-o-mat

24-Aug-09 23:32

Call GetLastError[^] after your DoModal returned (with -1) and see the System Error codes[^]. Which error does it report? Also another question, how/where do you register your custom control?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Dialog with custom control won't work with satellite DLL

Per G26-Aug-09 20:41

Per G

26-Aug-09 20:41

// App command to run the dialog<br />
void CMultiLangApp::OnAppAbout()<br />
{<br />
        CAboutDlg aboutDlg;<br />
        aboutDlg.DoModal(); // calling CDialog::DoModal()<br />
}<br />
 <br />
 <br />
// the fucntioncalls to the error<br />
INT_PTR CDialog::DoModal()<br />
{<br />
        &<br />
        &<br />
        &<br />
        if (CreateDlgIndirect(lpDialogTemplate, CWnd::FromHandle(hWndParent), hInst)) // calling CWnd::CreateDlgIndirect<br />
}<br />
 <br />
 <br />
BOOL CWnd::CreateDlgIndirect(LPCDLGTEMPLATE lpDialogTemplate,<br />
        CWnd* pParentWnd, HINSTANCE hInst)<br />
{<br />
        &<br />
        &<br />
        &<br />
        hWnd = ::CreateDialogIndirect(hInst, lpDialogTemplate,<br />
                pParentWnd->GetSafeHwnd(), AfxDlgProc);<br />
// returns NULL and The GetLastError() is 0 after CreateDialogIndirect.<br />
}

The registration of my custom control is done in the the constructor in the control class by calling RegisterWindowClass

Re: Dialog with custom control won't work with satellite DLL

Code-o-mat26-Aug-09 22:15

Code-o-mat

26-Aug-09 22:15

When you register your custom control, using the WNDCLASS[^] or WNDCLASSEX[^] structures, for the hInstance member, do you specify an instance handle of your application? If yes, try giving it the DLL's handle instead and see if it changes anything. You still didn't tell me what GetLAstError() gives you.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Dialog with custom control won't work with satellite DLL

Per G26-Aug-09 22:37

Per G

26-Aug-09 22:37

The call to returns NULL and The GetLastError() is 0 after CreateDialogIndirect. as shown below

hWnd = ::CreateDialogIndirect(hInst, lpDialogTemplate, pParentWnd->GetSafeHwnd(), AfxDlgProc);<br />

Well I register my custom control using WNDCLASS and a specify the hInstance, by calling AfxGetInstanceHandle but I don't know how to change it to point to the DLL.

WNDCLASS wndcls;<br />
  HINSTANCE hInst = AfxGetInstanceHandle();<br />
<br />
  if (!(::GetClassInfo(hInst, BITMAPVIEWER_CLASSNAME, &wndcls)))<br />
  {<br />
     // otherwise we need to register a new class<br />
     wndcls.style            = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;<br />
     wndcls.lpfnWndProc      = ::DefWindowProc;<br />
     wndcls.cbClsExtra       = wndcls.cbWndExtra = 0;<br />
     wndcls.hInstance        = hInst;<br />
     wndcls.hIcon            = NULL;<br />
     wndcls.hCursor          = AfxGetApp()->LoadStandardCursor(IDC_ARROW);<br />
     wndcls.hbrBackground    = (HBRUSH) (COLOR_3DFACE + 1);<br />
     wndcls.lpszMenuName     = NULL;<br />
     wndcls.lpszClassName    = BITMAPVIEWER_CLASSNAME;<br />
     if (!AfxRegisterClass(&wndcls))<br />
     {<br />
         AfxThrowResourceException();<br />
         return FALSE;<br />
     }<br />
  }<br />
<br />
return TRUE;

Re: Dialog with custom control won't work with satellite DLL

Code-o-mat26-Aug-09 22:49

Code-o-mat

26-Aug-09 22:49

Try with GetModuleHandle("your_dlls_name.dll"); maybe.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Dialog with custom control won't work with satellite DLL

Per G26-Aug-09 22:55

Per G

26-Aug-09 22:55

yes, seams to do the work fine.
But I will do a larger test later to day, so I'm 100% sure it works.

Thanks, this has been bugging by for very long time now

Re: Dialog with custom control won't work with satellite DLL

Per G26-Aug-09 23:14

Per G

26-Aug-09 23:14

okey, runned new check and it still works
thanks again

Re: Dialog with custom control won't work with satellite DLL

Code-o-mat26-Aug-09 23:21

Code-o-mat

26-Aug-09 23:21

Glad i could help, but i am not sure how safe this solution is...i am not sure what exactly the hInstance is used for when you register a custom control, i guess it is used by the system to automatically unregister window classes when the module that contains their implementation gets unloaded, if it is so, then as long as your DLL is in memory while your program runs you should not run into any troubles, however i do not know when that DLL will get unloaded, if you still have such custom controls hanging around windows when your DLL is unloaded you probably will run into problems...or i am just being too cautious about it. Anyways, good luck.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Advance tolpic in vc6

hrishiS24-Aug-09 1:05

hrishiS

24-Aug-09 1:05

Hi to all,

I am a new learner in visual C++ 6.....I knew C++ language, and now i learnt visual studio editor also....just what is enough to debug and run the project...

Now i am having free time and I would like to learn more...I want to be a good vc6 programmer.
Could anyone please suggest some topics(may be related to project design, C++ Concept or anything in VS6 editor that one should know) to me so that I can go through.

Thanks in advance.

-----------------------------
I am a beginner

Re: Advance tolpic in vc6

Aabid24-Aug-09 2:02

Aabid

24-Aug-09 2:02

your problem is too brief can u explain it little more... what type of programs you want to make in VC++6.

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