How to create floating toolbar that always active in MFC application - C / C++ / MFC Discussion Boards

Yup, you are tight , iwas jsut able to extend and use it directly... Smile | :)

How I can read and write dicom image via c++?

Maybe this[^] link will help.

"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment

"Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst

I wrote a program which includes these declarations:-

C++

class PEN{public: HDC d; HPEN pen,old;
    PEN(HDC dc,COLORREF col);
    ~PEN();};

/*-----*/
/* the device context dc must still exist when the pen is deleted */

C++

PEN::PEN(HDC dc,COLORREF col){ // constructor
    d=dc;
    pen=(HPEN)CreatePen(0,1,col);
    old=(HPEN)SelectObject(dc,pen);};
PEN::~PEN(){ // destructor
    SelectObject(d,old);
    DeleteObject(pen);};

/*-----*/
// then I can write for example:-
/*-----*/

C++

if(xhairs) {
    PEN orange(WIdc,RGB(255,128,0)); // crosshairs
    Line(WIdc,0,b/2,(int)(2*a),(int)(b/2));
    Line(WIdc,(int)(a/2),0,(int)(a/2),b);
    Line(WIdc,(int)(a*1.5),0,(int)(a*1.5),b);}

/*-----*/
and the new pen is automatically cleared away when control leaves the block where the pen was declared.

And similarly with fonts etc.

modified 3-Feb-15 9:41am.

And your question is?

The difficult we do right away...
...the impossible takes slightly longer.

Is this class declaration likely to be any use to any of you?

Anthony Appleyard wrote:
Is this class declaration likely to be any use to any of you?

Not really, the GDI+ Pen class[^] is already available.

I' m new with MFC. I needed to create a floating toolbar (CToolBar) with no option of docking and save and restore its last pos.

The toolbar also should be active all the time, but its NOT. When I'm openning a new child window (dialog for instance) from the mainframe, the floating tool bar become not active (I can not click on its buttons, or drag it etc..).

In the past I've used CDialog with Overlapped style and it was floating and always active as I needed. Is it possible to do the same with my Floating Toolbar? Thanks

C++

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{     
   if (CFrameWnd::OnCreate(lpCreateStruct) == -1)
   return -1;
 
   toolbarIconSize.cx = toolbarIconSize.cy = TOOLBAR_MAIN_ICON_SIZE;
   if ( !m_wndMyFloatingToolbar.Create(this,m_wndMyFloatingToolbar.GetBarStyle() |WS_EX_PALETTEWINDOW  | WS_EX_TOPMOST  |CBRS_FLOATING | WS_VISIBLE) ||
    !m_wndMyFloatingToolbar.LoadToolBar(IDR_GENERAL_TOOLBAR, toolbarIconSize))
    {
       TRACE0("Failed to create My Floating Toolbar\n");
       return -1;      // fail to create
    }
 
   m_wndMyFloatingToolbar.EnableDocking(0);
   EnableDocking(0);
 
   if (!CreateCtrlBar())
   {
       TRACE0("Failed to create ctrl toolbar\n");
       return -1;      // fail to create
   }
 
   // ...
   //...
   return 0; 
}
 
void CMainFrame::OnViewToolBar()
{
   // ...
   //...

   CPoint Pos = MyFloatingToolbarGetLastPosition(); \\Get last pos 
   FloatControlBar( &m_wndMyFloatingToolbar, Pos, CBRS_ALIGN_LEFT );
   MyFloatingToolbarSetIsVisible();
   FloatControlBar( &m_wndMyFloatingToolbar, Pos, CBRS_ALIGN_LEFT );
}
void CMainFrame::MyFloatingToolbarSetIsVisible()
{
   WINDOWPLACEMENT wp;
   m_wndMyFloatingToolbar.GetParent()->GetParent()->GetWindowPlacement(&wp);
   wp.showCmd = SW_SHOW;
   m_wndMyFloatingToolbar.GetParent()->GetParent()->SetWindowPlacement(&wp);
 
   m_wndMyFloatingToolbar.GetParent()->GetWindowPlacement(&wp);
   wp.showCmd = SW_SHOW;
   m_wndMyFloatingToolbar.GetParent()->SetWindowPlacement(&wp);
 
   m_wndMyFloatingToolbar.GetWindowPlacement(&wp);
   wp.showCmd = SW_SHOW;
   m_wndMyFloatingToolbar.SetWindowPlacement(&wp);
}
void CWJToolBar::OnWindowPosChanging(WINDOWPOS FAR* lpwndpos)
{ 
   CToolBar::OnWindowPosChanging(lpwndpos); 
 
   if ( GetBarStyle() & CBRS_FLOATING )
   {
       if((lpwndpos->flags & SWP_HIDEWINDOW) && ((this->GetParentFrame())->m_hWnd !=(this->GetTopLevelFrame())->m_hWnd)) 
       { 
           CMainFrame* mf = (CMainFrame*)(AfxGetApp()->GetMainWnd());
           mf->MyFloatingToolbarSavePosition();         
       }
   }
}

In Visual C/C++ 2008 version's main top menu, clicking on "Build" causes a dropdown menu, which includes:-

Build Solution
Rebuild Solution
Clean Solution
Build xxxx
Rebuild xxxx
Clean xxxx
Project Only

and clicking on "Project Only" causes a sub-dropdown menu with:-

Build Only xxxx
Rebuild Only xxxx
Clean Only xxxx
Link Only xxxx

where "xxxx" is the name of the current project.

What is "Solution" and what is "xxxx" and what is "Only xxxx"? Which of these 3 options recompiles the whole of the current project? Which option recompiles what?

Each project is part of a Solution (top folder in the tree), which may contain other projects. So you can build/rebuild/clean only a particular project, or every project in the Solution.

The first line of the output should use the %d place holder in the format string to print the number 42.
The second line should use the %c placeholder to print the letter J.
The third line should use the %f placeholder to print the number 3.14159 with 6 decimal digits after the
decimal (this is the default)

smells like homework - read your lecture notes & textbook, then post back whatever actual code you have written - we don't write code, especially homework for people - it makes them lazy and us annoyed, and your teacher/professor/whatever can smell copied/stolen works a mile off

See https://msdn.microsoft.com/en-us/library/ybk95axf.aspx[^].

error C2440: 'static_cast' : cannot convert from 'void (__thiscall COptionDBTransport::* )(PCTSTR)' to 'AFX_PMSG'

Throws error at this line-

C++

ON_BN_CLICKED(IDC_BUTTON_udpCheck, &COptionDBTransport::OnBnClickedButtonudpcheck)

Please help me for this issue.

modified 31-Jan-15 3:49am.

Seemingly your only problem is that your method signature doesn't match.

See the AFX_PMSG[^] signature.

You method receives a PCTSTR parameter while a button event handler should be a method without any parameters.

Yes ,it is inherited from CCmdTarget(base class of all classes used)
M still stuck to that error
@pasztorpisti-How to pass multiple parameters to a button event handler.

You can not pass a parameter to a button event handler. You have to gather the data in the handler - for example by querying textboxes/checkboxes/etc in your handler method.

thanks pasztorpisti, will try that.

Does your COptionDBTransport inherit from CCmdTarget (or a derived type of it)?

Have you included (even if indirectly) <afxwin.h>? (ON_BN_CLICKED is defined in another header)

Thanks, Yes Have inculded the header file.

Then I'm totally baffled. Recommend you compile with /P (preprocess to file) and then, from a command-prompt try to compile that generated file. It should contain #line directives and such making it (hopefully) obvious why it fails.

++luck;

This is a code for snake game using dev c++. now i would like to know how can i create:

- a new snake (2nd snake) which eats the apple(so called apple) on its own..
- which means.. 1st snake will be handled by user. while the 2nd snake works on its own. and both snake fights to get the apple.

can any1 suggest me how can i do this.

C++

#include <iostream>
#include <windows.h>
#include <stdlib.h>
#include <conio.h>

using namespace std;

typedef struct tailpos
{
  int x;   
  int y;  
  struct tailpos *next;  
  struct tailpos *prev;    
} 
  tail;

// d used to set the direction
int d=4; // up = 1 , down = 2 , left =3 , right = 4;

class snake
{
public:  
      
       int foodx,foody;             
      
       HANDLE console_handle;   
       COORD cur_cord;        
      
       tail *start,*current,*newtail;
       snake(); 
       void insert(int x , int y); 
       void draw();    
       void drawWall(); 
       void move();    
       bool collision();  
       void drawfood(int x=0);      
     
};

snake::snake()
{
  start = NULL; 
  current = NULL; 
  newtail = NULL;   
  console_handle=GetStdHandle( STD_OUTPUT_HANDLE );  

  foodx=12;                   
  foody=14;   
}


void snake::drawWall()
{
     // draw left column
     cur_cord.X=0;
     for(int y=0;y<=30;y++)
           {.....
       

}  

void snake::drawfood(int x)
{
  tail *tmp;
  tmp=start->next;
  if(x==1) .....
}

void snake :: insert(int x , int y)
{
     
     if(start == NULL)
     {
       newtail = new tail;
       newtail->x=x;
       newtail->y=y;
       newtail->next=NULL;
       newtail->prev=NULL;
       start=newtail;
       current=newtail;
     }
     else            
     {
       newtail = new tail;
       newtail->x=x;
       newtail->y=y;
       newtail->next=NULL;
       newtail->prev=current;  
       current->next=newtail;
       current=newtail;
     }
     
}

void snake::move()
{
    tail *tmp,*cur; 

    tmp =current; 
                  

  while(tmp->prev!=NULL)
  {
    tmp->x=tmp->prev->x;        
    tmp->y=tmp->prev->y;
    tmp=tmp->prev;              
                     
  }
           
if(d==1)
  start->y--;

if(d==2)
  start->y++; 

if(d==3)
  start->x--;

if(d==4)
  start->x++;                 
                     
}

bool snake::collision()
{
    tail *tmp;
    tmp=start->next;
    //check collision with itself
  while(tmp->next!=NULL)
     {
       if(start->x == tmp->x && start->y == tmp->y)
       return true;
                                                    
       tmp=tmp->next;                
     }
     //check collision with food
  if(start->x == foodx && start->y == foody)
     {
       insert(foodx,foody);          
       drawfood(1);  // draw food at new position
                      
     }
//check collision with wall
     //collision top
  for(int x=0;x<=30;x++)
     {
       if(start->x == x .....
}


void snake::draw()
{

tail *tmp , *last;
tmp=start;
last = current;

                     

while(tmp!=NULL)
                      {
                        cur_cord.X=tmp->x;
                        cur_cord.Y=tmp->y;
                        SetConsoleCursorPosition(console_handle,cur_cord);
                       
                        cout << "#";
                        tmp=tmp->next;                         
                      }
// remove tail
cur_cord.X=last->x;
cur_cord.Y=last->y;
SetConsoleCursorPosition(console_handle,cur_cord);
cout << ' ';

//draw the food
 cur_cord.X.....
 
}


int main()
{  
......
}

getch();
return 0;   
}

Hello,

I'm trying to adapt some Microsoft code (member.cpp in Detours) for my case
( I just want to replace
void CMember::Target(void)
by
QString QString::fromAscii(const char *str, int size):

MS Code :

C++

class CMember
{
  public:
    void Target(void);
};

void CMember::Target(void)
{
    printf("  CMember::Target!   (this:%p)\n", this);
}

//////////////////////////////////////////////////////////////// Detour Class.
//
class CDetour /* add ": public CMember" to enable access to member variables... */
{
  public:
    void Mine_Target(void);
    static void (CDetour::* Real_Target)(void);

    // Class shouldn't have any member variables or virtual functions.
};

void CDetour::Mine_Target(void)
{
    printf("  CDetour::Mine_Target! (this:%p)\n", this);
    (this->*Real_Target)();
}

void (CDetour::* CDetour::Real_Target)(void) = (void (CDetour::*)(void))&CMember::Target;

My code :

C++

class CDetour /* add ": public CMember" to enable access to member variables... */
{
  public:
    QString Mine_Target(const char *str, int size);
    static QString (CDetour::* Real_Target)(const char *str, int size);

    // Class shouldn't have any member variables or virtual functions.
};

QString CDetour::Mine_Target(const char *str, int size)
{
    printf("  CDetour::Mine_Target! (this:%p)\n", this);
    (this->*Real_Target)(str, size);
}

QString (CDetour::* CDetour::Real_Target)(const char *str, int size) = (CDetour::*)(const char *str, int size)&QString::fromAscii;

But I get :

error C2059: syntax error: '< tag >::*'

for the last line

Why ?!

Thanks.

Edit :
If I do :

C++

QString (CDetour::* CDetour::Real_Target)(const char *str, int size) = (QString(CDetour::*)(const char *str, int size))&QString::fromAscii;

I get :

error C2440: 'type cast' : impossible to convert from 'QString (__cdecl *)(const char *,int)' into 'QString (__thiscall CDetour::* )(const char *,int)'

modified 29-Jan-15 7:21am.

The first definition can't be correct. Regarding the second one, for me it looks like the QString::fromAscii isn't defined as a member method. Have you tried creating an own class like the CMember one and using this class' function in the function pointer? Once you get this working you can call QString::fromAscii directly from the inner function.

The good thing about pessimism is, that you are always either right or pleasently surprised.

But QString::fromAscii is a Static Public Members from Qt :

QString Class Reference

I thought I just had to replace CMember by QString and Target by fromAscii from the MS sample...