C / C++ / MFC

4-Jan-09 5:20

This method [^] looks promising (see the lbColor member of the LOGBRUSH [^] struct).
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: CBrush - color

korte254-Jan-09 5:41

korte25

4-Jan-09 5:41

Thanks a lot

Re: CBrush - color

CPallini4-Jan-09 5:42

Webbrowser control + ActiveX

4-Jan-09 5:42

You're welcome.
Smile | :)

nobaq4-Jan-09 3:39

nobaq

4-Jan-09 3:39

Hi,

Is it possible to enable/allow ActiveX controls inside my webbrowser control (CHtmlView).

Please do not say it is not possible! Frown | :-(

Niki

PS: Background: I'm writing a database application where data is stored in html format. There are also popups (similar to the old WinHelp32) which are implemented using JavaScript (or similar things; these scripts are not written by me). When I open such a HTML file directly in IE I get the security warning (even when all files are local). In my webbrowser control I even do not get a warning but only script errors.

Re: Webbrowser control + ActiveX

nobaq4-Jan-09 4:10

nobaq

4-Jan-09 4:10

I have found CoInternetSetFeatureEnabled.

But nothing changes Frown | :-(

I have already set FEATURE_WEBOC_POPUPMANAGEMENT, FEATURE_SECURITYBAND, FEATURE_LOCALMACHINE_LOCKDOWN, FEATURE_RESTRICT_ACTIVEXINSTALL. But nothing changes Frown | :(

I again get a script error with "Permission denied" Frown | :(

Re: Webbrowser control + ActiveX

nobaq5-Jan-09 2:00

nobaq

5-Jan-09 2:00

The problem was not the browser control itself but my async pluggable protocol!

I missed to handle PARSE_SECURE_URL for the secure manager so two different URLs in my protocol were essentially in a different domain.

So I got "permission denied"-messages when accessing different frames (cross frame scripting prevention)

Regards,
Niki

static-inheritance problem

KasyaMafia4-Jan-09 3:32

4-Jan-09 3:32

Hello, I have a problem with static variables and inheritance

<br />
<br />
class BVolume {<br />
protected:<br />
enum { NONE = 0, SPHERE, BOX, PLANE };<br />
public:<br />
static const unsigned short type = NONE;<br />
<br />
virtual bool TestCollision(BVolume * volume)=0;<br />
<br />
};<br />
<br />

<br />
<br />
class BBox : public BVolume {<br />
public:<br />
static const unsigned short type = BOX;<br />
<br />
bool TestCollision(BVolume * volume) { return Collision< volume -> type >(volume); }<br />
<br />
template< unsigned short type > bool Collision(BVolume * volume) { return false; }<br />
<br />
template< > bool Collision< BOX >(BVolume * box) { return BoxCollision(static_cast< BBox * >(box)); }<br />
template< > bool Collision< SPHERE >(BVolume * sphere) { return SphereCollision(static_cast< BSphere * >(sphere)); }<br />
<br />
bool BoxCollision(BBox * box) { return true; } //For Testing That Code<br />
bool SphereCollision(BSphere * box) { return true; } //For Testing That Code (BSphere is for testing too)<br />
<br />
<br />
};<br />
<br />

<br />
<br />
BBox b1, b2;<br />
<br />
bool Collided() {<br />
<br />
return b1.TestCollision(&b2);<br />
<br />
}<br />
<br />
if(Collided()) std::cout << "Collided";<br />
else std::cout << "Not Collided";<br />
<br />

the code above outputs "Not Collided"

I found the problem but i don't know how to solve it.

Problem:

volume->type in BBox::TestCollision is NONE (it needs to be BOX or SPHERE here) because static is a Compile Time "Thing". I need something Run Time "Thing".

What can i do? Please Help me with that problem!

Thanks,
Kasya

CPallini4-Jan-09 3:42

4-Jan-09 3:42

Why don't you use a virtual method, for instance getType(), instead of a const?
Smile | :)

KasyaMafia4-Jan-09 4:33

4-Jan-09 4:33

please tell me how? Like that:

virtual const unsigned short getType() { return BOX; }

It doesn't work i tested it.

If you mean another thing please tell me.

Thanks,
Kasya

CPallini4-Jan-09 4:54

Re: static-inheritance problem [modified]

4-Jan-09 4:54

This works for me:

class BVolume {
public:
enum { NONE = 0, SPHERE, BOX, PLANE };
	static const unsigned short type = NONE;

virtual bool TestCollision(BVolume * volume)=0;
virtual const unsigned int getType(){ return NONE;}

};

class BBox : public BVolume {
public:
static const unsigned short type = BOX;

bool TestCollision(BVolume * volume) { return Collision< volume -> type >(volume); }

template< unsigned short type > bool Collision(BVolume * volume) { return false; }


bool BoxCollision(BBox * box) { return true; } //For Testing That Code
virtual const unsigned int getType(){ return BOX;}

};


void main()
{
	BBox b1, b2;
	BVolume *pv1 = &b1;
	if ( pv1->getType() == BVolume::BOX) cout << "is a box" << endl;
}

KasyaMafia4-Jan-09 5:59

4-Jan-09 5:59

i get error when using this:

bool TestCollision(BoundingVolume * volume) { return Collision< volume->getType() >(volume); }

Error:

error C2975: 'type' : invalid template argument for 'BoundingBox::Collision', expected compile-time constant expression

modified on Sunday, January 4, 2009 12:06 PM

CPallini4-Jan-09 6:14

4-Jan-09 6:14

Why don't you exploit polymorphism instead of using template methods?

Smile | :)

Mark Salsbery4-Jan-09 6:42

Mark Salsbery

4-Jan-09 6:42

Exploit is such a harsh word....I prefer "enslave".

Sorry for the OT interruption Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

CPallini4-Jan-09 10:17

4-Jan-09 10:17

Mark Salsbery wrote:
Sorry for the OT interruption

Oh, I know you wanted sooooooooooooo bad to be the first CP's member to join the Happy Brigade [^] in 2009.
Welcome Mark!
Big Grin | :-D

Mark Salsbery4-Jan-09 15:22

Mark Salsbery

4-Jan-09 15:22

Wow! I had never heard of that list.

A dubious honor indeed! I am so honored! Jig | [Dance]

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

KasyaMafia4-Jan-09 7:20

4-Jan-09 7:20

You mean overload the functions. Then why i need BVolume Class here in my code. If i can do it with template please tell me how.

Thanks,
Kasya

CPallini4-Jan-09 10:10