C / C++ / MFC Discussion Boards

Tomasz Sowinski3-Jun-02 3:15

3-Jun-02 3:15

This is not a problem - it's a feature. Your program should set the scrollbar position in WM_HSCROLL/WM_VSCROLL handlers.

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Re: strange CScrollBar problem - HELP!

3-Jun-02 3:44

It helped. Now i just have to process these LINE/PAGE/THUMB codes.
Thank You.

Krzysztof Szczech [CoY0te]

How to resize toolbar when it was floating?

white jungle3-Jun-02 2:35

white jungle

3-Jun-02 2:35

I want to I want manipulate it's size when the toolbar was floating .But I found that it can not success when I use function MoveWindow().
how can I do?

Don't look at me in that way!

Re: How to resize toolbar when it was floating?

3-Jun-02 3:22

I don't know the problem exactly ,but maybe this would help:
WINDOWPLACEMENT Place;
Place.rcNormalPosition.left = ... ;
Place.rcNormalPosition.right = ... ;
Place.rcNormalPosition.top = ... ;
Place.rcNormalPosition.bottom = ... ;
// Window must be a CWnd object
Window->SetWindowPlacement(&Place);
This function allows to manipulate all dimensions of a window simulatenously. I don't know if You use MFC or windows API, so I can't tell You more...

Krzysztof Szczech [CoY0te]

Re: How to resize toolbar when it was floating?

Tomasz Sowinski3-Jun-02 3:49

Tomasz Sowinski

3-Jun-02 3:49

Floating toolbars are hosted in CMiniFrameWnd windows - so you really need to resize the frame window. To get a pointer to CMiniFrameWnd, call CControlBar::GetDockingFrame, then use MoveWindow.

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

problem:How draw text with NOT mode

Alexey Kourakolov3-Jun-02 2:16

Alexey Kourakolov

3-Jun-02 2:16

I want draw text on position of cursor/
How i can quick draw text without full invalidate?

Re: problem:How draw text with NOT mode

Tomasz Sowinski3-Jun-02 2:59

Tomasz Sowinski

3-Jun-02 2:59

I don't think that SetROP2 will work for you with [Ext]TextOut or DrawText[Ex]. I'd draw the text to off-screen bitmap, then use BitBlt with SRCINVERT.

Also, you could try creating a path, using ExtTextOut or TextOut, then setting SetROP2 and calling StrokePath/FillPath. Never tried this personally, however.

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Re: problem:How draw text with NOT mode

Alexey Kourakolov3-Jun-02 3:16

Alexey Kourakolov

3-Jun-02 3:16

thanks

Problems with my DLL

3-Jun-02 2:03

Hi,

I'm making this DLL that has about 60 exported functions. Some of them work perfectly in the client app, but not all. I've discovered that it's the functions with 'const std::wstring&' parameters that don't work properly. When I compile the client app, I get the following error:

unresolved external symbol "bool __cdecl TASFileDup(class std::basic_string,class std::allocator > const &)"

I have no idea why some of the functions work and others don't. I get no errors or warnings when I compile the DLL.

I've tried writing 'using namespace std' in the client app, but that had no effect. Any suggestions?

Jarle

Re: Problems with my DLL

Mike Nordell3-Jun-02 22:51

Mike Nordell

3-Jun-02 22:51

If you are not aware of it already: If you pass or return any of these classes by value you must use the DLL version of the CRT (mixing heaps spells d-i-s-a-s-t-e-r).

My guess why only some functions are failing is that it's just these functions that make use of not yet instantiated class templates.

In my experience the std:: types unfortunately fits like a foot in a glove when mentioned in module (such as DLL) interfaces. What you have experienced now is just the tip of the iceberg.

Create a Linked List BaseClass

Bug3-Jun-02 1:57

Bug

3-Jun-02 1:57

Can someone help me in the right direction? I am really stuck trying to create my own linked list base class.
The problem shows up when I derive a class from the linked list base class.

Because within the baseclass I want to manage the list and add new nodes, but these are forced be like ' new CBaseClassList'. So that derived classes do not truly inherit the linked list ability, since only base class nodes are added. I hope I made my problem clear. Let my try to explain better in simple code:

class CBaseClassList
{
CBaseClassList *liststart_node;
AddNode();
int basedata;
}
CBaseClassList::AddNode()
{
liststart_node = new CBaseClassList();
}

class CDerivedClass : public CBaseClassList
{
int deriveddata;
DoStuff();
}
CDerivedClass::DoStuff()
{
// Adding a new node from within the derived class will only create
// a node based on the baseclass!!
// So I am not able to use CDerivedClass datamembers
AddNode();

// OK:
liststart_node->basedata = 10;
// impossible:
liststart_node->deriveddata
}

Please note that I really want the baseclass to stay as absract as possible so that I neednt create multiple linked list code in my project and that I can use it for pretty much anything. Just one baseclass linked list to derive and inherrit linked list ability from. I do know about STL, but I need my own baseclass list construction in this project (in relation to fast code).

Re: Create a Linked List BaseClass

Tomasz Sowinski3-Jun-02 1:54

Tomasz Sowinski

3-Jun-02 1:54

Bug wrote:
do know about STL, but I need my own baseclass list construction in this project (in relation to fast code).

In relation to fast code, you should use STL anyway. Unless this is kind of homework, of course. Wink | ;)

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Re: Create a Linked List BaseClass

3-Jun-02 5:01

Why are you not using a template class?

Re: Create a Linked List BaseClass

Bug3-Jun-02 22:43

Bug

3-Jun-02 22:43

I'm trying using templates now. Thanks.

Thread

Mazdak3-Jun-02 1:28

Mazdak

3-Jun-02 1:28

I have a thread function and I define it as global function:

This function get the focused window and change the position of it.

BOOL bdown = false ;

UINT ThreadFunc(LPVOID pparam)
{

	WINDOWINFO info;
	HWND hwnd;
	DWORD dword;
        hwnd = (HWND)GetForegroundWindow();
	GetWindowThreadProcessId( hwnd , &dword);
	AttachThreadInput( dword , GetCurrentThreadId()  ,true);
	hwnd = GetFocus();
	if(hwnd != NULL)
		GetWindowInfo( hwnd ,&info );
	else
	{
	  hwnd = (HWND)GetForegroundWindow();
      GetWindowInfo( hwnd ,&info );
	}
	if(hwnd!=NULL)
	{

		int x = info.rcWindow.left;
		int y = info.rcWindow.top;
		int width = (info.rcWindow.right-info.rcWindow.left);
		int height = (info.rcWindow.bottom-info.rcWindow.top) ;

		if(bdown)
			y -= 90;
		else
			y += 90;

		SetWindowPos(hwnd , HWND_NOTOPMOST , x , y , width ,height , SWP_SHOWWINDOW);

		if(bdown)
			bdown = false;
		else
			bdown = true;

		Sleep(1000);
	}
	return 0;
}

I start thread in my OnInitDialog of my class like this:

AfxBeginThread(ThreadFunc, 0);

The problem is that if when I call the function without starting thread it works and change the position but when I start the thread nothing happend.also when I debug my application it change the postion for one time and it seems that it does not called another time.Any idea?

Mazy

"The more I search, the more my need
For you,
The more I bless, the more I bleed
For you."The Outlaw Torn-Metallica

Re: Thread

Tomasz Sowinski3-Jun-02 1:32

Tomasz Sowinski

3-Jun-02 1:32

Your thread function executes once and then returns - the thread finishes. Some kind of loop is missing.

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Re: Thread

Mazdak3-Jun-02 2:42

Mazdak

3-Jun-02 2:42

Yes,thank you man. Smile | :)

Mazy

"The more I search, the more my need
For you,
The more I bless, the more I bleed
For you."The Outlaw Torn-Metallica

How to add min, max and close button to the menu bar?

melwyn3-Jun-02 1:05

melwyn

3-Jun-02 1:05

Hi,
My application does not have a title bar due to space constraints.

I need to add the minimize, maximize and close buttons (which are normally on the title bar) to the menu bar.

Any ideas on how I can do this would be greatly appreciated.
Thanks.

Re: How to add min, max and close button to the menu bar?

Sonu Kapoor3-Jun-02 1:29

Sonu Kapoor

3-Jun-02 1:29

you could draw some bitmaps and import them to your resources and use the CButtonST class to give the button a normal look. Take a look the follwing article about CButtonST http://www.codeproject.com/buttonctrl/cbuttonst.asp

Hope this helps...

Best Regards

Sonu Kapoor

how to write a small debugger in c++?

hwnd3-Jun-02 1:01

hwnd

3-Jun-02 1:01

thanks

Re: how to write a small debugger in c++?

Tomasz Sowinski3-Jun-02 1:15

Tomasz Sowinski

3-Jun-02 1:15

Check this link:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/debug/dbgerr_intro_6dbb.asp

Tomasz Sowinski -- http://www.shooltz.com

- It's for protection
- Protection from what? Zee Germans?

Device driver ?

Girish Shriniwas Pathak3-Jun-02 0:46

Girish Shriniwas Pathak

3-Jun-02 0:46

I have searched a single tutorial which will explain me a simple device driver in vC++.
But I could'nt found any tutorial as such.
Does any body knows

Re: Device driver ?

Mike Nordell3-Jun-02 22:54

Mike Nordell

3-Jun-02 22:54

Yes, but unless you tell us exactly what operating system you want to do it for it's impossible to answer.

For at least NT drivers you can download the DDK from Microsft. Not that it's probably well over 100MB.

Re: Device driver ?

5-Jun-02 23:12

yes i want this on windows nt or 2000

MSDN Integration with Visual C++.NET

Orbital^3-Jun-02 0:45

Orbital^

3-Jun-02 0:45

Hi,
Anyone know how I can integrate MSDN Library with VC++.NET so when I press F1 the MSDN is to be open (not the local help in VC++.NET )??

Bye,
Orbital^

...the night is long ... but not long enought to do some real coding ...

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