C / C++ / MFC Discussion Boards

Anders Molin10-Jan-02 3:34

10-Jan-02 3:34

Hey,

I have a control derived directly from CWnd.

The WM_MOUSEWHEEL message is never sent to my window/control, I have also tried with spy++, but no WM_MOUSEWHEEL Confused | :confused:

I have tried to define _WIN32_WINNT 0x0400 in stdafx.h, but it made no difference...

Anyone got an idea?

- Anders

Money talks, but all mine ever says is "Goodbye!"

Re: problem with WM_MOUSEWHEEL

BlackSmith10-Jan-02 4:53

BlackSmith

10-Jan-02 4:53

E-mail me the source code + your E-mail.

--BlackSmith--

"With the help of all mighty", 2001, Me.

Re: problem with WM_MOUSEWHEEL

Michael P Butler10-Jan-02 5:23

Michael P Butler

10-Jan-02 5:23

What OS has this problem?

Michael Smile | :)

Re: problem with WM_MOUSEWHEEL

Anders Molin10-Jan-02 5:54

Anders Molin

10-Jan-02 5:54

I'm currently running WinXP Professional...

- Anders

Money talks, but all mine ever says is "Goodbye!"

Question on Hook or API Interception

gordingin10-Jan-02 3:22

gordingin

10-Jan-02 3:22

I want to change the common dialog box for all applications, new, old, all of them. Should I use a CBT Hook or intercept the API itself. Are there other options? Any opions?

Thanks
Ralph Krausse

Re: Question on Hook or API Interception

Ernest Laurentin10-Jan-02 3:39

Ernest Laurentin

10-Jan-02 3:39

Microsoft Detours Library

- God bless the World

Dynamic handlers?

Fredrik Skog10-Jan-02 3:16

Fredrik Skog

10-Jan-02 3:16

How does one go about to implement handlers for buttons that are created dynamically at runtime? E.g. I want to create a button which should run a program when pressed. The program to run is configured by the user. I was thinking of storing the program name within the button object. Then I could use one handler for all of the buttons, but how do I know which button it was that called the handler (in order to retrieve the program name)?

Cheers,

/Fredrik

Do you Sonork? I do! 100.11430:PhatBoy

Re: Dynamic handlers?

Thomas Ascher10-Jan-02 3:39

Thomas Ascher

10-Jan-02 3:39

You can use ON_COMMAND_RANGE to handle a range of commands:

class CMyDialog : public CDialog
{
afx_msg void OnHandleCommands(UINT nID);
DECLARE_MESSAGE_MAP()
};

BEGIN_MESSAGE_MAP(CMyDialog, CDialog)
ON_COMMAND_RANGE(ID_COMMAND_FIRST, ID_COMMAND_LAST, OnHandleCommands)
END_MESSAGE_MAP()

void CMyDialog::OnHandleCommands(UINT nID)
{
// nID contains the ID of the command to handle
}

flickerfree dialog painting..

Bernhard10-Jan-02 2:55

Bernhard

10-Jan-02 2:55

i have made a dialog.. resize it by hand (it's an easy one)
now i've tried to make this whole shista flickerfree.. but i don't get it flickerfree..
i've tried "clip children" and "clip siblings".. but it still flickers..

any ideas?
thanks in advance
bernhard

Sometimes I think the surest sign for intelligent life elsewhere in
the universe is that none of them ever tried to contact us.

Re: flickerfree dialog painting..

Roger Allen10-Jan-02 6:11

Roger Allen

10-Jan-02 6:11

Override the dialog WM_ERASEBKGND message and do this :

BOOL CAnalysis::OnEraseBkgnd(CDC* pDC) 
{
	CRect	clip ;
	static int dont_erase_indexes[] =
			{
			IDC_WAVELENGTHS_LABEL,
			IDC_COMPONENTS,
			IDC_COMPONENTS_SPIN,
			IDC_HSCROLL
			} ;
	pDC->SaveDC() ;
	for (int i = 0 ; i < sizeof(dont_erase_indexes) / sizeof(int) ; i++)
		{
		GetDlgItem(dont_erase_indexes[i])->GetWindowRect(&clip);		// get rect of the control
		ScreenToClient(&clip);
		pDC->ExcludeClipRect(&clip);
		}
	pDC->GetClipBox(&clip);
    pDC->FillSolidRect(clip, GetSysColor(COLOR_BTNFACE));
	pDC->RestoreDC(-1) ;
	return FALSE;
}

Just add the ID's of the control on the dialog to the static array.

Roger Allen
Sonork 100.10016

Re: flickerfree dialog painting..

Bernhard10-Jan-02 20:27

Bernhard

10-Jan-02 20:27

thank you for your reply..
now i know that i the control itself has got some problems with memory-drawing too..
but i really like that you can learn alot from code from other people
(i didn't knew that you could give -1 as a parameter to RestoreDC)

great thanks

Bernhard

Sometimes I think the surest sign for intelligent life elsewhere in
the universe is that none of them ever tried to contact us.

Anybody who knows a tools for downloads site of CGI?

LeighSword10-Jan-02 2:14

LeighSword

10-Jan-02 2:14

thanks a lot.

Re: Anybody who knows a tools for downloads site of CGI?

markkuk10-Jan-02 20:07

markkuk

10-Jan-02 20:07

Do you mean Common Gateway Interface or Computer Generated Images?

Re: Anybody who knows a tools for downloads site of CGI?

LeighSword14-Jan-02 13:23

LeighSword

14-Jan-02 13:23

I mean Common Gateway Interface,such as all files of cgi-bin .

Re: Anybody who knows a tools for downloads site of CGI?

Todd Smith14-Jan-02 14:13

Todd Smith

14-Jan-02 14:13

Normally (unless the admin has screwed up directory permissions) you can't download cgi files. The only thing you can get is what the cgi outputs.

Todd Smith

CBitmap - optimization problem

Giulio10-Jan-02 2:06

Giulio

10-Jan-02 2:06

Hi, all!
Does anyone know the FASTEST way to reach RGB data contained in a CBitmap object?
In a prototype I use CDC::GetPixel, but I think it is highly sub-optimal.
May you help me?
Thanks

Re: CBitmap - optimization problem

Christian Graus10-Jan-02 10:15

Christian Graus

10-Jan-02 10:15

Copy it into a DIBSection, and you've got it in a BYTE**. For an example, check out my code online at www.wdj.com, in the Sept 2001 issue. I'll also point out it is stored BGR.

Christian

I have come to clean zee pooollll. - Michael Martin Dec 30, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

fatal errpr LNK1104: cannot open file "ipl.lib"

hierro10-Jan-02 1:24

hierro

10-Jan-02 1:24

I have a program that uses Intel Performance Library Suite. Theprogram cannot be compiled. Error message is "fatal error LNK1104: cannot open file "ipl.lib". What should I do?

Re: fatal errpr LNK1104: cannot open file "ipl.lib"

Jon Hulatt10-Jan-02 2:06

Jon Hulatt

10-Jan-02 2:06

find that file on your disk, and make sure your project settings specify that directory as one of the lib directories.

Sorry to dissapoint you all with my lack of a witty or poignant signature.

How do I get the window to the top of the screen.

VanHlebar10-Jan-02 1:19

VanHlebar

10-Jan-02 1:19

I am developing an app using eVC 3.0 for WinCE. I was wondering if anyone knew how to get my windows title bar to be where the Start Command bar is and for my main window area start just under the command bar? I am using MFC and have created the window with rectDefault as the window size parameter. Since I can not post a picture of what it looks like please look at the following link for an example:

http://www.pocketprojects.com/ubb/Forum2/HTML/002767.html

Thanks,
-Eric

CPictureHolder and CImageList

Paul Selormey10-Jan-02 0:44

Paul Selormey

10-Jan-02 0:44

Hello All,
I am having some confusing problems with the above classes and need help. I have a COM interface that allows the user to build image list from several sources and different ways.
However, the images are finally stored in CImageList object. Now, I want to make it easier for the users to access any of the image items and render them. I provided the IPictureDisp interface (StdPicture in VB).
When the user request for an image item passing in the index, I convert the image to icon (CImageList::ExtractIcon), create CPictureHolder object and pass the IPictureDisp interface.

The problem is when the picture is rendered on the VB picture box, it turns to be black (cannot make up the image). However, if I load icons directly in the CPictureHolder and pass them to the VB, it works correctly.
What could be the difference between icons from CImageList and those loaded with ExtracIconsEx from files?

Best regards,
Paul.

Paul Selormey, Bsc (Elect Eng), MSc (Mobile Communication) is currently Windows open source developer in Japan, and open for programming contract anywhere!

A CFileDialog Question - selecting multiple files

Dor9-Jan-02 23:58

Dor

9-Jan-02 23:58

I have created and displayed a file dialog to select multiple files. But when i select more then four files and hit enter or prell the ok button, the selection is erased and all that is left is the text in the entry box under the listbox. When trying to recover the files selected, the dialog box sends back nothing.
can some one help me pleeeeese Confused | :confused:

Re: A CFileDialog Question - selecting multiple files

Fredrik Skog10-Jan-02 1:34

Fredrik Skog

10-Jan-02 1:34

What flags do you pass to the constructor?
I usually use OFN_HIDEREADONLY | OFN_ALLOWMULTISELECT
Maybe you can post some code?

Cheers,

/Fredrik

Do you Sonork? I do! 100.11430:PhatBoy

Re: A CFileDialog Question - selecting multiple files

PJ Arends10-Jan-02 10:29

PJ Arends

10-Jan-02 10:29

You have to allocate your own buffer for the returned files. The default buffer is too small.

TCHAR MyBuffer[1024];
CFileDialog fdlg;
fdlg.m_ofn.lpstrFile = MyBuffer;
fdlg.m_ofn.nMaxFile = 1024;

Look up OPENFILENAME in MSDN.

---
Sonork 100.11743 Chicken Little

It may be that your sole purpose in life is simply to serve as a warning to others.

Re: A CFileDialog Question - selecting multiple files

Fredrik Skog10-Jan-02 20:56

Fredrik Skog

10-Jan-02 20:56

IMHO, it is easier to use the functions of CFileDialog to retrieve the files.
Then you don't have to worry about buffer sizes.

CString strFileName("");
POSITION pos;
CStringList* strlistFileNames;

CFileDialog FileDlg(
true, // File Open dialog.
"*", // Default file name extension.
NULL, // No initial filename.
OFN_HIDEREADONLY | OFN_ALLOWMULTISELECT,
m_strNameMask + " (" + m_strSuffixMask + ")" + "|" + m_strSuffixMask + "|All Files (*.*)|*.*||"
);

FileDlg.m_ofn.lpstrTitle = "Select files";

pos = FileDlg.GetStartPosition();
while (pos != NULL)
{
strlistFileNames->AddTail(FileDlg.GetNextPathName(pos));
}

Cheers,

/Fredrik

Do you Sonork? I do! 100.11430:PhatBoy

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