Re: How do I draw a border around text? - C / C++ / MFC Discussion Boards

ns14-Jan-03 10:49

14-Jan-03 10:49

I tracked it down to:

BOOL CWnd::GetWindowPlacement(WINDOWPLACEMENT* lpwndpl) const
{
ASSERT(::IsWindow(m_hWnd));
lpwndpl->length = sizeof(WINDOWPLACEMENT);
return ::GetWindowPlacement(m_hWnd, lpwndpl);
}

and its at the assert that its unhappy.

I did get a non-null pointer imageDisplay that I used:

CImageDisplay* imageDisplay =m_imageDisplayVector[0];

// Get the window's current size and position.
imageDisplay->GetWindowPlacement(&wp);

Thanks

Appreciate your help,
ns

Re: crashes in GetWindowPlacement

Nitron15-Jan-03 14:41

Nitron

15-Jan-03 14:41

What is m_imageDisplayVector[0] ?? is it a valid ptr?
Where do you initialize it and what is it's value?

- Nitron

"Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

GetActiveView -

ns14-Jan-03 10:42

14-Jan-03 10:42

My GetActiveView is returniung a null pointer. Maybe thius is because I dont have an active view? When I run the app, it pops up with one CFormView in it which I was assuming is the so called active view> Am I right? Or do I have to do something to make a view active?

Appreciate your help,
ns

need to get to Viewclass from mainframe

ns14-Jan-03 10:31

14-Jan-03 10:31

I had a way of getting the pView pointer but its not working anymore. I posted on anotehr thread. What I would like is to get a fresh sample or pointer on how to get to the view class members from the mainframe. Its a CFormView based MDI project with only 1 doc and only 1 view at this stage.....

Appreciate your help,
ns

how do you attach a dialog resource to tab pages

joshfl14-Jan-03 9:37

joshfl

14-Jan-03 9:37

hi,

i am poking aroung at a tabcntl, and i was wondering if theres a way to attach an individual dialog resource to each tabcntl tab?

seems like the easiest way for me to edit my tabs would be this way.

can it be done?

todo....
:: insert inpirational text here ::

Re: how do you attach a dialog resource to tab pages

Nitron15-Jan-03 14:45

Nitron

15-Jan-03 14:45

You may want to check this[^] out. Big Grin | :-D

- Nitron

"Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

How do I draw a border around text?

clintsinger14-Jan-03 9:29

clintsinger

14-Jan-03 9:29

I would like to draw some text then outline it with a black border. How does one do something like this?

Christian Graus are you reading this? You seem to be a graphics wizard Smile | :)

Cheers,
Clint

Re: How do I draw a border around text?

C^hris L^osinger14-Jan-03 10:15

C^hris L^osinger

14-Jan-03 10:15

use GetTextExtent or DrawTextEx with the DT_CALCRECT flag to find the size of the text. then draw a rect of the appropriate size at the appropriate place. that's a rectangular border.

if you actually want an outline around the individual characters (like you might find in a graphics package), then you're in for some work. one way is to draw it slightly larger in black, then draw normal size on top - one character at a time. or, you could draw the text, use some kind of filter to detect the border, overlay the images, etc..

-c

I'm not the droid you're looking for.

ThumbNailer

Re: How do I draw a border around text?

clintsinger14-Jan-03 11:27

clintsinger

14-Jan-03 11:27

Could I draw the whole string slightly larger than one I overlay or do I have to do the characters one at a time?

Cheers,
Clint

Re: How do I draw a border around text?

C^hris L^osinger14-Jan-03 12:24

C^hris L^osinger

14-Jan-03 12:24

if you draw the whole string, you could run into alignment problems, since the spacing between characters may be different between the two font sizes. but, it might be worth a shot.

-c

I'm not the droid you're looking for.

ThumbNailer

Re: How do I draw a border around text?

benjymous14-Jan-03 23:02

benjymous

14-Jan-03 23:02

One fairly easy solution is just to draw your text 4 times in black, offset by one pixel in each direction, then once in your desired colour in the middle

i.e.

Text( x-1,y, "Hello", BLACK )
Text( x+1,y, "Hello", BLACK )
Text( x,y-1, "Hello", BLACK )
Text( x,y+1, "Hello", BLACK )

Text( x,y, "Hello", WHITE )

or you could just use a for loop if you want a thicker border

Obviously this all relies on your text rendering code being nice and fast, but if you're using anything modern then it should be Smile | :)

--
Help me! I'm turning into a grapefruit!

SHBrowseForFolder in c code gives->'Release' : is not a member of 'IMalloc'

KoftaMan14-Jan-03 9:19

KoftaMan

14-Jan-03 9:19

I'm working in C and would like to be able to use the SHBrowseForFolder to have a folder browser. I used the following code:

void FolderDialog(HWND hDlg, int msgField)
{
IMalloc * pMalloc;
if ( SHGetMalloc(&pMalloc) == NOERROR )
{
BROWSEINFO bi;
char pszBuffer[MAX_PATH];
LPITEMIDLIST pidl;
bi.hwndOwner = hDlg;
bi.pidlRoot = NULL;
bi.pszDisplayName = pszBuffer;
bi.lpszTitle = "Select Directory";
bi.ulFlags = BIF_RETURNFSANCESTORS | BIF_RETURNONLYFSDIRS;
bi.lpfn = NULL;
bi.lParam = 0;
if ((pidl = SHBrowseForFolder(&bi)) != NULL)
{
if (SHGetPathFromIDList(pidl, pszBuffer))
{

SetDlgItemText(hDlg, msgField, pszBuffer);
}
pMalloc->Free(pidl);
}
pMalloc->Release();
}
}

I get the following two errors:

error C2039: 'Free' : is not a member of 'IMalloc'
(846) : see declaration of 'IMalloc'
error C2039: 'Release' : is not a member of 'IMalloc'
(846) : see declaration of 'IMalloc'

If I remove the Free and Release statements the program execute fine but I would rather not have that kinda leakage going on. Any suggestions would be much appreciated.
Thanks

Re: SHBrowseForFolder in c code gives->'Release' : is not a member of 'IMalloc'

Stefan Pedersen14-Jan-03 9:53

Stefan Pedersen

14-Jan-03 9:53

Use the vtable explicitly.
pMalloc->lpVtbl->Free()
The price you will pay for skipping ++ Smile | :)

"You can stand all night at a redlight anywhere in town, hailing Marys left and right but none of them slow down. I've seen the best of men go past. I don't wanna be the last..."

Re: SHBrowseForFolder in c code gives->'Release' : is not a member of 'IMalloc'

KoftaMan14-Jan-03 10:00

KoftaMan

14-Jan-03 10:00

Stefan,

I did something similar earlier but now I get the following errors:

error C2198: 'function through pointer' : too few actual parameters
error C2198: 'function through pointer' : too few actual parameters

Believe me I would have much rather done this in civilized code but its not my call.
Thanks

Re: SHBrowseForFolder in c code gives->'Release' : is not a member of 'IMalloc'

KoftaMan14-Jan-03 10:20

KoftaMan

14-Jan-03 10:20

Ok Stefan,

You were right, sorry about the hassle. I found the explanation to my question here: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/directx9_c/directx/intro/program/com/usingc.asp

Should have researched more before I opened my mouth.

Basically using COM with C requires an extra level of indirection + an additional parameter which points to the interface...

so in my case, this works:

pMalloc->lpVtbl->Free(pMalloc,pidl);

}

pMalloc->lpVtbl->Release(pMalloc);

Thank you much

Nadim

NULL pView pointer

ns14-Jan-03 8:05

14-Jan-03 8:05

THis is an MFC MDI app. I get the msgBox for :

CMDIFrameWnd *pFrame = (CMDIFrameWnd*)AfxGetApp()->m_pMainWnd;

// Get the active MDI child window.
CMDIChildWnd *pChild = (CMDIChildWnd *) pFrame->GetActiveFrame();

// Get the active view attached to the active MDI child
// window.
CResizeSonarViewBoxView *pView = (CResizeSonarViewBoxView *) pChild->GetActiveView();

if(pView == NULL)<code>AfxMessageBox("Null pView")</code>;

I only have the one view so far. Whats is wrong and how do I fix it?

ACtually how do I go about tracking down this problem?
Thanks

Appreciate your help,
ns

Re: NULL pView pointer

Paul Belikian14-Jan-03 9:01

Paul Belikian

14-Jan-03 9:01

Hello,

For MDI you have to do it another way....

<br />
CView * SomeClass::GetActiveView(void)<br />
{<br />
POSITION pos;<br />
CMDIChildWnd *pChild;<br />
CDocument *pDoc;<br />
CView* pView;<br />
CMainFrame *pFrame;<br />
<br />
pFrame = (CMainFrame *) AfxGetMainWnd();<br />
ASSERT(pFrame!=NULL);<br />
pChild = pFrame->MDIGetActive();<br />
ASSERT(pChild != NULL);<br />
pDoc = pChild->GetActiveDocument();<br />
ASSERT(pDoc != NULL);<br />
pos = pDoc->GetFirstViewPosition();<br />
ASSERT(pos != NULL);<br />
pView = pDoc->GetNextView(pos); <br />
return pView;<br />
}<br />

Hope that helps,

Paul...

Re: NULL pView pointer

ns14-Jan-03 10:09

14-Jan-03 10:09

I see what you are doing. But the sample I have trouble withis actually from a working program that I put together last year..............it works great there! I wonder why.

I'll do your method in this project though I am very very puzzled!

Appreciate your help,
ns

Re: NULL pView pointer

ns14-Jan-03 10:11

14-Jan-03 10:11

The one thing that might be the problem is that my old project where the code I posted, has two views. In this curent code I only have 1 view.....Could that be the problem?

Appreciate your help,
ns

tried your way but.....???

ns14-Jan-03 10:19

14-Jan-03 10:19

Crashed at the assert:

POSITION pos;
CMDIChildWnd *pChild;
CDocument *pDoc;
CResizeSonarViewBoxView* pView;
CMainFrame *pFrame;

pFrame = (CMainFrame *) AfxGetMainWnd();
ASSERT(pFrame!=NULL);
pChild = pFrame->MDIGetActive();
<code>ASSERT</code>(pChild != NULL);

Thanks

Appreciate your help,
ns

Re: tried your way but.....???

Paul Belikian14-Jan-03 13:00

Paul Belikian

14-Jan-03 13:00

Hi,

What happened to the..

pDoc->GetFirstViewPosition();<br />

part of the code???

Re: tried your way but.....???

ns15-Jan-03 4:45

15-Jan-03 4:45

Crashed before it got there! Thtas why Ididnt paste that part.... Frown | :(

Appreciate your help,
ns

Finding the z-order of a window

Chris Sutcliffe14-Jan-03 7:23

Chris Sutcliffe

14-Jan-03 7:23

Hi all,

I've written a function that finds the top window, botttom window, and next highest window (in terms of z-order). It then takes the top window, places it behind the bottom window, and make the next highest active. This works for everything except MS Office windows. For some reason, MS Office apps always end up being placed behind the next highest window, which means when cycling through the windows, they show up as evey other window.

I'm using GetWindow in a loop in the function, and according the MSDN, it recommends using EnumChildWindows instead of GetWindow in a loop. Is there a function that I can use in the EnumChildProc that will return a value for the z-order of the window (or is there a better way to do this)?

Thanx!

Chris

Adding a option to start the program on boot-up..

RobJones14-Jan-03 7:02

RobJones

14-Jan-03 7:02

Hello,
Just wondering if anyone has any neat tricks to give users an option to have your software startup when windows loads (or not startup)..

Any ideas?
Rob

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

AlexO14-Jan-03 7:31

AlexO

14-Jan-03 7:31

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

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