C / C++ / MFC Discussion Boards

SetBkColor does not seem to work in OnInitDialog

maxsteel19-Jul-04 5:02

19-Jul-04 5:02

hi,
i have a dialog box with a static control. the problem is that when i try to use setbkcolor for the static control in oninitdialog of the dialog box, it does not produce any results. i have tried to use GetDC() for the static control to get the DC. and then tried to set the background color of the static control. can any one give me a solution?

regards,
kevin

Re: SetBkColor does not seem to work in OnInitDialog

vcplusplus19-Jul-04 5:52

vcplusplus

19-Jul-04 5:52

Look into using the WM_CTLCOLOR Message

http://support.microsoft.com/default.aspx?scid=kb;en-us;32685

Re: SetBkColor does not seem to work in OnInitDialog

maxsteel19-Jul-04 18:42

maxsteel

19-Jul-04 18:42

using WM_CTLCOLOR causes problems in other parts of my code. is there any other solution?

Re: SetBkColor does not seem to work in OnInitDialog

vcplusplus20-Jul-04 3:04

vcplusplus

20-Jul-04 3:04

It should not affect other parts of your code.

Here is a sample of my code.

HBRUSH CMyView::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) 
{
	HBRUSH hbr = CFormView::OnCtlColor(pDC, pWnd, nCtlColor);
	
	INT nIDCtl = pWnd->GetDlgCtrlID();
	switch(nIDCtl)
	{
	case IDC_STATIC_CTRL1:
		{
			// Change background color to white so that the
			// text is easier to read.
			pDC->SetBkColor(RGB(255, 255, 255));
			CBrush br;
			br.CreateSolidBrush(RGB(255, 255, 255));
			hbr = (HBRUSH)br;
			br.Detach();
		}
		break;
	case IDC_STATIC_CTRL2:
               ....
               ....
	case IDC_STATIC_CTRL3:
               ....
               ....
	case IDC_STATIC_CTRL4:
               ....
               ....
        }
	return hbr;
}

Re: SetBkColor does not seem to work in OnInitDialog

Alexander Wiseman19-Jul-04 5:56

Alexander Wiseman

19-Jul-04 5:56

You could also take a look at this excellent article: http://www.codeproject.com/staticctrl/clabel.asp[^]

Hope that helps!

Sincerely,
Alexander Wiseman

Est melior esse quam videri
It is better to be than to seem

Re: SetBkColor does not seem to work in OnInitDialog

Ravi Bhavnani19-Jul-04 6:54

Ravi Bhavnani

19-Jul-04 6:54

SetBkColor() should be used when handling a WM_PAINT message or within a control's DrawItem() override. Use it to set the background color of the DC for the duration of the painting action.

/ravi

My new year's resolution: 2048 x 1536
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ravib@ravib.com

Re: SetBkColor does not seem to work in OnInitDialog

maxsteel19-Jul-04 18:43

maxsteel

19-Jul-04 18:43

even if i use setbkcolor in WM_PAINT is does not do anything.

SDI Project - How do display a new Window object that is NOT On Top of the Main Window??

jerry1211a19-Jul-04 4:56

jerry1211a

19-Jul-04 4:56

I have a SDI project where a user using the menu can select and load another window object. I get the new window, but it is on top of my main window. I want to be able to move the window away from the main window.

This is the code I use to create and show the window:

pStatus->dlg.Create(IDD_FORM_STATUS);
pStatus->dlg.ShowWindow(SW_SHOW);

Can someone help me out?
Thanks.
Jerry

Re: SDI Project - How do display a new Window object that is NOT On Top of the Main Window??

valikac19-Jul-04 5:02

valikac

19-Jul-04 5:02

One solution is MoveWindow().

Kuphryn

How to integrate MFC projects?

pork chop19-Jul-04 3:35

pork chop

19-Jul-04 3:35

hi!

im a newbie with MFC & hope someone can help me with this...

i hv created 2 MFC dialog based programs and need to integrate them together... ie. after integrating, when i click on build on execute, the 2 dialogs shld appear together on the screen.

i've tried using a modal dialog box in program A so as to contain program B but created a mess n it's not functioning too.. as the 2 dialog dialog boxes need not communicate w each other, i wonder if there is a better suggestion?

Re: How to integrate MFC projects?

V.19-Jul-04 3:41

19-Jul-04 3:41

Use Modeless Dialogs...

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

VC++6 to VC++7: link pb with CString

ienien19-Jul-04 3:13

ienien

19-Jul-04 3:13

Hi!
I have projects and DLLs made with Visual C++6 and I try to pass to Visual C++7.
I have a link error when I use a function (contained in a DLL) that uses a CString as parameter.
ERROR LINK 2019 non resolved symbol CStringT ...
Everything was alright with VC++6.
How to solve my link problem?
Will any other problems happen soon during the passing of VC++6 to VC++7???
Thanks.

Deleteing a file

si_6919-Jul-04 2:56

si_69

19-Jul-04 2:56

Hi all

does ne1 know the easist way of deleting a file

i have a txt file which i need to remove in certain situations

i tried using

remove(str_SettingsPath);

but that doesnt work Sigh | :sigh:

any ideas ??

si

Re: Deleteing a file

Ravi Bhavnani19-Jul-04 3:04

Ravi Bhavnani

19-Jul-04 3:04

Use unlink(), CFile::Remove() or DeleteFile(). Be sure to specify the file's full pathname.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Re: Deleteing a file

David Crow19-Jul-04 3:17

David Crow

19-Jul-04 3:17

si_69 wrote:
i tried using

remove(str_SettingsPath);

but that doesnt work

It should, if used correctly. What value does it return? The file must not have the read-only (and probably the hidden) bit set. You must also have the right privileges.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: Deleteing a file

si_6919-Jul-04 3:40

si_69

19-Jul-04 3:40

silly me, still had the file open while i was trying
to delete it

D'Oh! | :doh:

getcwd puzzle

ns19-Jul-04 2:19

19-Jul-04 2:19

I first selected some files from an input directory, and then set the output directory to be some other location. Then I processed my input files and had it do a system() call for "dir/b > list.txt".
Its odd that it created the list.txt in the input files directory . I also checked with getcwd and sure enough it was the input directory. What is the reason for this?
Thanks,
sb

Re: getcwd puzzle

Ravi Bhavnani19-Jul-04 2:41

Ravi Bhavnani

19-Jul-04 2:41

Working directories are specific to a drive. You're much better off using an API to get the list of files in a dir instead of calling system().

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Re: getcwd puzzle

David Crow19-Jul-04 3:12

David Crow

19-Jul-04 3:12

Ravi Bhavnani wrote:
...instead of calling system().

Agreed.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: getcwd puzzle

Toni7819-Jul-04 5:40

Toni78

19-Jul-04 5:40

How did you select the output directory? dir /b > list.txt WILL create a list.txt file on the current working directory. I am just curios to know how you set the output directory because there is no such function as setcwd(), unless you used chdir(). But if you did that then dir /b list.txt will work only on the new directory.
On the other hand, "dir /b > C:\...\outputDir\list.txt" will do the trick and probably you knew that already. "dir" command will take as parameters the full path to the input directory and the full path to the output directory.
i.e. dir c:\...\inputDir /b > c:\...\outputDir\list.txt

Some code posted here would help.

But just as the others did, I would recommend API.

// Afterall, I realized that even my comment lines have bugs

If the sun were to blow up, it would take us 7-8 minutes to realize it.

How to Hook the Print message

HemantR...19-Jul-04 2:04

HemantR...

19-Jul-04 2:04

Hi all,

I want to track the printer messages send by any application.

I want to do this using windows Hook... but I dont know which Hooking message i should use here...

If anybody knows this please help me...

Thanks
Smile | :)

Re: How to Hook the Print message

bikram singh19-Jul-04 11:04

bikram singh

19-Jul-04 11:04

Try the WH_CALLWNDPROC, WH_CALLWNDPROCRET or the WH_GETMESSAGE hook types.

Look for a message id of WM_PRINT.

Bikram Singh

Re: How to Hook the Print message

HemantR...20-Jul-04 21:47

HemantR...

20-Jul-04 21:47

I already use that, but it is not working....

I get the WM_PRINT message when i just click on the menu... and not when i press print command from menu...

I don’t know how this is happening...

Hear is my code...

LRESULT CALLBACK HookProc(int nCode, WPARAM wParam, LPARAM lParam)
{
// return immediately if system required
if (nCode < 0){
return CallNextHookEx(g_hInitMenuHook, nCode, wParam, lParam);
}

// get window procedure struct
CWPSTRUCT *wps = (CWPSTRUCT*)lParam;

switch(wps->message)
{
case WM_PRINT:
/// code for loging the print command
break;
}

return CallNextHookEx(g_hInitMenuHook, nCode, wParam, lParam);
}

I tried this HookProc for both WH_CALLWNDPROC and WH_GETMESSAGE... but it is not working

Can anybody suggest me any other way to trace the Print Command

Thanks
Smile | :)

Best way to scroll a control

0v3rloader19-Jul-04 1:48

0v3rloader

19-Jul-04 1:48

Hi,

I am using DC's ScrollDC to scroll the contents of a custom control.

There are some problems though...

Whenever a window is hovering the control, the DC does not scroll the contents properly. Example:

Custom Control's pos/size: [0,0] - [100, 200]
Now imagine a window hovering at [75, 60] - [outbounds control]
The DC does not scroll from [75,0] - [100,60] !!!

Why?

Note: I am calling ScrollDC without passing (nulling) pRgnUpdate and lpRectUpdate (the last two parameters), as I don't really understand their meaning.

BOOL ScrollDC( int dx, int dy, LPCRECT lpRectScroll, LPCRECT lpRectClip,
 CRgn* pRgnUpdate, LPRECT lpRectUpdate );

prob in displaying and deleting text in a view

aarti vimal19-Jul-04 1:31

aarti vimal

19-Jul-04 1:31

hi friends,
i m working on a radar display in vc++.i.e.i want to plot a trajectory using xyz coordinates.i have to display a number that should move with the trajectory.as i know the xyz co ordinates and the no as well, i m able to display it.but the problem is that as the trajectory moves the no should also move with it.so that the no now gets displayed on the new coordinates and the one that was on the last coordinates gets deleted.so that it also seems to be moving witjh the trajectory. i m displaying the no using textout function.if anyone can give some idea on how to delete the no on the previous points so that it gets erased as soon as we get the new coordinates or if there is some other method of displaying the no so that it is visible only on the current point.
waiting for a reply....

Aarti Vimal
Scientist 'B'
Defence research & Development Organisation,
Bangalore,
Karnataka,
India.

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