C / C++ / MFC Discussion Boards

Re: SetWindowPos : Debug assertion

KingsGambit20-Dec-09 20:21

KingsGambit

20-Dec-09 20:21

You can change the size of your dialog from OnInitDialog() function.
SetWindowPos(&wndTop, 0, 0, 150, 150, SWP_NOMOVE);

Re: SetWindowPos : Debug assertion

Anu_Bala20-Dec-09 20:29

Anu_Bala

20-Dec-09 20:29

when i set the pos in OnIntiDialog(),it doesno t work.I asked this doubt previously in codeproject.then only i used that in Onwindowposchanging().

Now i want to reduce the wodth of dialog after pressing the button.

Anu

Re: SetWindowPos : Debug assertion

KingsGambit20-Dec-09 20:30

KingsGambit

20-Dec-09 20:30

When SWP_NOSIZE is used with SetWindowPos() the width you are specifying is ignored. Remove SWP_NOSIZE and see.

Re: SetWindowPos : Debug assertion

Anu_Bala20-Dec-09 21:31

Anu_Bala

20-Dec-09 21:31

But its not working.Same assertion error.

Anu

Re: SetWindowPos : Debug assertion

CPallini20-Dec-09 22:11

CPallini

20-Dec-09 22:11

What's it asserting?
Smile | :)

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-- Alfonso the Wise, 13th Century King of Castile.

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Re: SetWindowPos : Debug assertion

Anu_Bala20-Dec-09 22:21

Anu_Bala

20-Dec-09 22:21

Assertion in winocc.cpp.
Lets explain my actual problem.

Actuallu i want my dialog placed in left side of the screen.So i use
SetWindowPos(NULL,0,80,400,900,SWP_NOSIZE);

If i use other than SWP_NOSIZE,then dialog comes to center of my screen.
And also i have one button,if i press that the widtrh of the dialog get reduced like from 400 to 100.
So i use
SetWindowPos(NULL,0,80,200,900,SWP_NOSIZE);
in the function of that button.But i shows assertion error in this setwindowpos().

properties of dialog are
Border:None,Style:popup
Because, i dont want frame,caption etc.,
Pls help me

Anu

Re: SetWindowPos : Debug assertion

CPallini20-Dec-09 22:25

CPallini

20-Dec-09 22:25

OK, you use SetWindowPos in the button handler, but, again: what is the assertion message?
Smile | :)

Re: SetWindowPos : Debug assertion

Anu_Bala20-Dec-09 22:31

Anu_Bala

20-Dec-09 22:31

File:f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\winocc.cpp
Line:318
Im using VS2008.
And im using WPF controls in VC++,so i set CommonLangugeRunTImeSupport(/clr) option.

Anu

Re: SetWindowPos : Debug assertion

CPallini20-Dec-09 22:39

CPallini

20-Dec-09 22:39

Anu_Bala wrote:
File:f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\winocc.cpp
Line:318
Im using VS2008.

Could you please report the content of such line?
Smile | :)

Re: SetWindowPos : Debug assertion [modified]

Tim Craig21-Dec-09 12:36

Tim Craig

21-Dec-09 12:36

You don't have the MFC source memorized? Poke tongue | ;-P

[Edit]
Still no joy, I see. Laugh | :laugh:

You measure democracy by the freedom it gives its dissidents, not the freedom it gives its assimilated conformists.

modified on Monday, December 21, 2009 11:47 PM

Re: SetWindowPos : Debug assertion

CPallini21-Dec-09 20:34

CPallini

21-Dec-09 20:34

Tim Craig wrote:
You don't have the MFC source memorized?

Er..sorry not.
Anyway I may ask Rajesh: he has a monkey for each and every version of MFC...
Laugh | :laugh:

Re: SetWindowPos : Debug assertion

Tim Craig21-Dec-09 21:18

Tim Craig

21-Dec-09 21:18

CPallini wrote:
he has a monkey for each and every version of MFC

Won't Eddington miss them? Unsure | :~

Is one named Mike B.? Suspicious | :suss:

You measure democracy by the freedom it gives its dissidents, not the freedom it gives its assimilated conformists.

Re: SetWindowPos : Debug assertion

Anu_Bala21-Dec-09 16:27

Anu_Bala

21-Dec-09 16:27

Could you please report the content of such line?

I couldnot understand ur previous reply? what did u mean by content of line?

When i debug ,it comes at Disassemble at
102D5D03 call __crtMessageWindowA (102D49A0h)

Anu

Re: SetWindowPos : Debug assertion

CPallini21-Dec-09 20:32

CPallini

21-Dec-09 20:32

What is written in the file

File:f:\dd\vctools\vc7libs\ship\atlmfc\src\mfc\winocc.cpp

Line:318

Anu_Bala wrote:
Im using VS2008.

I have MFC that comes with Visual Studio 2005, hence the question.
Smile | :)

Re: SetWindowPos : Debug assertion

Anu_Bala21-Dec-09 21:45

Anu_Bala

21-Dec-09 21:45

BOOL CWnd::SetWindowPos(const CWnd* pWndInsertAfter, int x, int y, int cx,
int cy, UINT nFlags)
{
ASSERT(::IsWindow(m_hWnd) || (m_pCtrlSite != NULL)); // Line318

when i press F11 it goes another CPP and show assert error in this particular line

_CRTIMP int __cdecl _CrtDbgReportT(
int nRptType,
const TCHAR * szFile,
int nLine,
const TCHAR * szModule,
const TCHAR * szFormat,
...
)
{
int retval;
va_list arglist;

va_start(arglist,szFormat);

retval = _CrtDbgReportTV(nRptType, szFile, nLine, szModule, szFormat, arglist); //This line
va_end(arglist);

return retval;
}

Anu

Re: SetWindowPos : Debug assertion

CPallini21-Dec-09 21:49

CPallini

21-Dec-09 21:49

It looks like you call SetWindowPos before the window is actually created (i.e. m_hWnd is not valid).
Smile | :)

Re: SetWindowPos : Debug assertion

Anu_Bala21-Dec-09 22:32

Anu_Bala

21-Dec-09 22:32

Yes,when i debug.that m_nWnd shows 0x000000{unused=???)

But where can i use that.
Actually i want that fucntionality.i want to change the width of dialog using that button.

Anu

Re: SetWindowPos : Debug assertion

CPallini21-Dec-09 22:44

CPallini

21-Dec-09 22:44

Could you please post the code of your button handler?
Smile | :)

Re: SetWindowPos : Debug assertion

Anu_Bala21-Dec-09 22:58

Anu_Bala

21-Dec-09 22:58

void CToolBarDlg::OnWindowPosChanging(WINDOWPOS* lpwndpos)
{
CDialog::OnWindowPosChanging(lpwndpos);
SetWindowPos(&CWnd::wndTop,0,80,400,900,SWP_NOSIZE);
}

void CToolBarDlg::Onchangesize() //Button Handler
{
SetWindowPos(NULL,0,80,200,900,SWP_NOSIZE);

}

Anu

Dialog size does not change when DPI settings change

_T("No name")20-Dec-09 18:28

_T("No name")

20-Dec-09 18:28

Hi,
I have made a custom dialog have done some custom Drawing on it. it is derived from CDialog. when i change DPI settings on my system dialog size does not change accordingly.. I need it to be changed as i have set my font size according to DPI and font size changes..

plz help

P.S. :- Not even dialog size i have some other custom controls also like button its size also does not change in my application

Thanks

Re: Dialog size does not change when DPI settings change

KingsGambit20-Dec-09 20:28

KingsGambit

20-Dec-09 20:28

May be you can handle WM_SETTINGCHANGE or WM_DISPLAYCHANGE message and see if you get the notification when the system settings is changed.

Re: Dialog size does not change when DPI settings change

_T("No name")20-Dec-09 20:49

_T("No name")

20-Dec-09 20:49

that message is coming... but do i need to handle this seperately.. i mean shouldnt MFC change window size automatically ???

Re: Dialog size does not change when DPI settings change

CPallini20-Dec-09 22:28

CPallini

20-Dec-09 22:28

_T("No name") wrote:
i mean shouldnt MFC change window size automatically ???

Well, if it doesn't (and looks like it doesn't) then you have to do it, I guess it isn't such a daunting task.
Smile | :)

Re: Dialog size does not change when DPI settings change

_T("No name")20-Dec-09 22:38

_T("No name")

20-Dec-09 22:38

i am not getting any idea how to incorporate DPI in setting my dialog's width.. can u help me out....

Re: Dialog size does not change when DPI settings change

CPallini21-Dec-09 1:45

CPallini

21-Dec-09 1:45

If you wish to update your dialog size then, one simple way may be:

define a default (pixel) size for a default DPI setting (for instance 800x600 pixels for 96x96 dpi).
on receiving the 'system dpi changed' notification, change the size according to new dpi settings, for instance, 120x120 dpi would require:
(800*120/96) x (600*120/96) pixels = 1000x750 pixels.

You may obtain system dpi settings with the following code

HDC hdc = GetDC(NULL);
int dpix = GetDeviceCaps(hdc, LOGPIXELSX);
int dpiy = GetDeviceCaps(hdc, LOGPIXELSY);
ReleaseDC(NULL, hdc);

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