ATL / WTL / STL Discussion Boards

AssemblySoft20-Sep-04 12:56

20-Sep-04 12:56

thanks i will try that.

Could you please have a look at my thread 'ATL activeX control Initialize', directly below this one.

Re: BSTR to const char[]

AssemblySoft20-Sep-04 12:56

AssemblySoft

20-Sep-04 12:56

thanks i will try that.

Could you please have a look at my thread 'ATL activeX control Initialize', directly below this one.

Re: BSTR to const char[]

Michael Dunn20-Sep-04 10:56

Michael Dunn

20-Sep-04 10:56

See The Complete Guide to C++ Strings, Part II - String Wrapper Classes[^]

--Mike--
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Re: BSTR to const char[]

AssemblySoft20-Sep-04 12:57

AssemblySoft

20-Sep-04 12:57

thanks i will try that.

Could you please have a look at my thread 'ATL activeX control Initialize', directly below this one.

ATL activeX control Initialize

AssemblySoft20-Sep-04 7:02

AssemblySoft

20-Sep-04 7:02

Hi, i've just created an ATL dll which houses a full control for activeX support.

Basically it's working ok.
However i need to run some code once the control has been installed successfully. (after Register server)
This control is windowless.
In an MFC based control i could use something like OnCreate() but i don't have a clue where to start here.

I basically need an event that gets called once the control is installed.

Please Help Eek! | :eek:

Thanks in advance!!!

Carl

Re: ATL activeX control Initialize

Michael Dunn20-Sep-04 13:27

Michael Dunn

20-Sep-04 13:27

You can add your code to the global function DllRegisterServer(), although maybe I'm misunderstanding because the type of control doesn't matter at registration time.

--Mike--
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RichEdit

_johan18-Sep-04 11:05

_johan

18-Sep-04 11:05

Hello
Every time I try to create a RichEdit (using CRichEditCtrl), Create fails and GetLastError returns either ERROR_CANNOT_FIND_WND_CLASS or ERROR_CLASS_DOES_NOT_EXIST. I looked in the CRichEditCtrl class and the window class seems to be "RICHEDIT". Has anyone else had this problem or am I just doing something wrong? (When I use MFC, it works fine.)

Re: RichEdit

Michael Dunn18-Sep-04 13:01

Michael Dunn

18-Sep-04 13:01

In your app's init code, call:
LoadLibrary ( CRichEditCtrl::GetLibraryName() );
This is the equivalent of AfxInitRichEdit() in MFC.

--Mike--
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Re: RichEdit

_johan19-Sep-04 17:47

_johan

19-Sep-04 17:47

Great! Thanks a lot.

why ATL based ACTIVEX control got flicker when Redraw

max_xiayi17-Sep-04 12:54

max_xiayi

17-Sep-04 12:54

Hi,All,I am developing an ACTIVEX control embedded in IE, which is used to display continuous jpegs captured from a server.Firstly I wrote my ACTIVEX control in MFC,and call InvalidateControl() to realize control window redraw.It is ok.Then I rewrote my ACTIVEX in ATL,most of the code regards to grapic are same,but this time since InvalidateControl() can not be called in ATL based control, I call FireViewChange() to realize control window redraw time by time.However,I found that the control window got flicker when it is redraw.What happened and how to deal with?

please contact:
max_xiayi@hotmail.com

Re: why ATL based ACTIVEX control got flicker when Redraw

Todd Smith17-Sep-04 14:12

Todd Smith

17-Sep-04 14:12

FireViewChange() calls InvalidateRect with bErase=TRUE. You'll need to write your own FireViewChange() and pass FALSE for bErase.

<br />
inline HRESULT CComControlBase::FireViewChange()<br />
{<br />
	if (m_bInPlaceActive)<br />
	{<br />
		// Active<br />
		if (m_hWndCD != NULL)<br />
			::InvalidateRect(m_hWndCD, NULL, TRUE); // Window based<br />
		else if (m_spInPlaceSite != NULL)<br />
			m_spInPlaceSite->InvalidateRect(NULL, TRUE); // Windowless<br />
	}<br />
	else // Inactive<br />
		SendOnViewChange(DVASPECT_CONTENT);<br />
	return S_OK;<br />
}<br />

Todd Smith

Re: why ATL based ACTIVEX control got flicker when Redraw

greekgoddj11-Jan-05 22:49

greekgoddj

11-Jan-05 22:49

Having the same problem here. I have tried the above suggestion but it has not worked. I still get flickering. I have also user temporary DC buffer to do all the drawing onto before copying the buffer to the final output in one step.

Anybody come up with another way arround this?

Thanks,

Aristotel Sniff | :^)

Re: why ATL based ACTIVEX control got flicker when Redraw

greekgoddj30-Jan-05 23:13

greekgoddj

30-Jan-05 23:13

Anyone?

Re: why ATL based ACTIVEX control got flicker when Redraw

greekgoddj31-Jan-05 3:14

greekgoddj

31-Jan-05 3:14

Ok...quite embarrasing but basically I had forgotten to add

MESSAGE_HANDLER(WM_ERASEBKGND, OnEraseBkgnd)

So onEraseBkgnd was not being called at all. Silly me... Unsure | :~

Can't make work FireOnChanged

Anonymous17-Sep-04 11:22

Anonymous

17-Sep-04 11:22

Hi
I create in VC.7 an control and when one of property change it affected other,
and container should change this second property also.But when i test
my control in VB.NET affected property not changed(in property window),althoughi invoke FireOnChange for one.

<br />
//In header <br />
class ATL_NO_VTABLE CMyControl : <br />
	public CComObjectRootEx<CComSingleThreadModel>,<br />
	public CStockPropImpl<CMyControl, IDigDisplay><br />
	public IPersistStreamInitImpl<CMyControl>,<br />
	public IOleControlImpl<CMyControl>,<br />
	public IOleObjectImpl<CMyControl>,<br />
	public IOleInPlaceActiveObjectImpl<CMyControl>,<br />
	public IViewObjectExImpl<CMyControl>,<br />
	public IOleInPlaceObjectWindowlessImpl<CMyControl>,<br />
	public IConnectionPointContainerImpl<CMyControl>,<br />
	public IPropertyNotifySinkCP<CMyControl>,<br />
	public CProxy_IDigDisplayEvents<CMyControl>, <br />
	public IPersistStorageImpl<CMyControl>,<br />
	public ISpecifyPropertyPagesImpl<CMyControl>,<br />
	public IQuickActivateImpl<CMyControl>,<br />
	public IDataObjectImpl<CMyControl>,<br />
	public IProvideClassInfo2Impl<&CLSID_CMyControl, &__uuidof(_IMyControlEvents), &LIBID_MyControlLib>,<br />
	public CComCoClass<CDigDisplay, &CLSID_CMyControl>,<br />
	public CComControl<CMyControl><br />
{<br />
..<br />
}<br />
//All aboved interfaces include in com_map<br />
//and IPropertyNotifySinkCP inclued in connection_point_map <br />
<br />
//cpp<br />
<br />
// [id(1),firerequestedit,bindable]<br />
CMyControl()::put_FirstProperty(short newVal)<br />
{<br />
 m_firstValue = newVal;<br />
 m_secondValue = newVal + 1;<br />
<br />
FireOnChanged(1);<br />
FireOnChanged(2);<br />
}<br />
<br />
...<br />
<br />
//[id(2),firerequestedit,bindable]<br />
CMyControl()::put_SecondProperty(short newVal)<br />
{<br />
m_secondValue = newVal;<br />
FireOnChanged(2);<br />
}<br />
<br />
//[id(2),firerequestedit,bindable]<br />
CMyControl()::get_SecondProperty(short* pVal)<br />
{<br />
*pVal = m_secondValue;<br />
}<br />
<br />

Thats i miss here???
Thank

Flickering problem

qur17-Sep-04 0:42

qur

17-Sep-04 0:42

I am trying to develop the gird control in which Comboboxes are displayed over each subitem.
In DrawItem event i am displaying the combobox for each subitem, which is i think cause the flickering problem. Anyone knows the solution to remove the flickering in this scenario.

<br />
for(int nRow = 0; nRow < rows; ++ nRow)<br />
{<br />
	<br />
        for(int nCol = 0; cols; nCol++ )<br />
	{<br />
              //Drawing combos by ShowWindow(SW_SHOW) call<br />
	}<br />
}<br />

Re: Flickering problem

Jason De Arte20-Sep-04 12:56

Jason De Arte

20-Sep-04 12:56

While I've never had to do what you're doing, two things come to mind
1. Queue up the display of multiple windows with DeferWindowPos()
2. In the parent, change the erase background code to create a region that exclude the area of the child windows - I neat trick for dealing with excessive flickering when resizing a dialog.
I hope this helps

[ Jason De Arte | Toy Maker | 1001010.com ]

Re: Flickering problem

Jörgen Sigvardsson20-Sep-04 13:47

Jörgen Sigvardsson

20-Sep-04 13:47

Jason De Arte wrote:
2. In the parent, change the erase background code to create a region that exclude the area of the child windows - I neat trick for dealing with excessive flickering when resizing a dialog.

Isn't WS_CLIPCHILDREN supposed to do this... Confused | :confused:

I've a couple of dialogs which I want flicker free. WS_CLIPCHILDREN doesn't always help me. Hmmm | :|

Say, you don't have a small dialog sample anywhere you'd like to show me, or better yet, write an article about it? Smile | :)

--
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Re: Flickering problem

Jason De Arte21-Sep-04 12:57

Jason De Arte

21-Sep-04 12:57

Jörgen Sigvardsson wrote:
Say, you don't have a small dialog sample anywhere you'd like to show me, or better yet, write an article about it?

When I have some time, I might write a small article - but it's realy easy to do for most controls (except group boxes) on your resizing dialog.
1. In your WM_ERASEBKGND handler...
2. Create a region of the client area
3. For each valid & visible child window you want to exclude,
3.a. create a region of that window (try GetWindowRgn, XP Themes tends to make buttons round)
3.b. remove the child region - CombineRgn(rgnChild,rgnDlg,RGN_XOR)
4. Paint your background, I use FillRgn
5. return TRUE from WM_ERASEBKGRND, or all your work will be undone.

Minor details were left out, but you'll get the idea.

[ Jason De Arte | Toy Maker | 1001010.com ]

Re: Flickering problem

Jörgen Sigvardsson21-Sep-04 13:23

Jörgen Sigvardsson

21-Sep-04 13:23

I think I understand the idea. Now the question is; is this applicable for other controls than dialogs? I've had controls on resizable tab controls, and the flickering has been so bad. For this to work I need to be able to draw theme backgrounds using regions (tab controls have gradient backgrounds in XP). Seeing that the theme APIs don't make use of regions, I suppose I will have to give the HDC a clipping region. Do you know if that is possible? I'm guessing that selecting (SelectObject) a region will cause DC operations to be clipped by the region. (I'm really lost when it comes to advanced GDI Blush | :O

)

--
Arigato gozaimashita!

JavaScript access to Toolband

mvarvil15-Sep-04 13:24

mvarvil

15-Sep-04 13:24

I want to use a button or link on the HTML page to invoke an action contained on my custom tool bar. Using JavaScript, how can I get a reference to the toolbar?

I've reviewed the the article and source code at http://www.codeproject.com/atl/dahlia.asp[^].

I see that the developer somehow injects a property into the document that has a reference to the control into the top window's document, but I can't understand the cpp code that does it.

I've written my toolbar with c# and a COM wrapper, as I'm not a c++ man.

Thanks,
Mark Varvil

Re: JavaScript access to Toolband

Michael Dunn16-Sep-04 9:31

Michael Dunn

16-Sep-04 9:31

What I've done is have the toolbar listen for navigaion events, then have the link in the page navigate to some special URL like:
<a href="http://--toolbarcommand--/commandname">Click here</a>

When the toolbar sees the "--toolbarcommand--" part in the OnBeforeNavigate2 event, it cancels the navigation and executes the command.

--Mike--
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please help

andy_cn14-Sep-04 21:52

andy_cn

14-Sep-04 21:52

how do I solve the problem like:
error C2970: 'IDispEventImpl' : template argument 'plibid' : invalid address of static variable 'LIBID_MoticMotorLib'
error C2065: 'DIID__IStageEvents' : undeclared identifier
.....

thanks!

andy_cn

pls help

ThatsAlok14-Sep-04 1:15

ThatsAlok

14-Sep-04 1:15

want to retieve currently written text in iexlorer address bar when user
press enter button or click go button

pls help

-----------------------------
"I Think It will Work"
Formerly Known As "Alok The Programmer" at CP
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

Re: pls help

User 21559721-Sep-04 2:12

User 215597

21-Sep-04 2:12

1. How about writing an application that connects to running instance of IE and use DWebBrowserEvents2 interface.
2. Write a plugin for IE that uses DWebBrowserEvents2 interface

You can check out IE programming articles on www.codeguru.com

Hope this helps

-------------------------
Have a great day ahead!
Regards,
Sohail Kadiwala

modified 21-Apr-21 21:01pm.

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