menu creation

kumaran · #1 21-Feb-2005, 21:06

hi ,
i want to know how to link a newly created menu with the coding written
on OnDraw function.

in detail:

i made a grid using on draw function and i need to create a menu,
let me label it as 'diagram' which has cells as 'ondraw' 'indraw' where if i
click 'ondraw' cell the particular grid should be displayed.
pls tell me how.

Max Payne · #2 21-Feb-2005, 22:01

I think no one rplys to your original post because thay can't help without you decribing in more detail what actually you want to do...

is it dialog or sdi application?? is it a context menu or you want to rplace the main menu??? and what is it you do in the OnDraw function that you want to link to...

kumaran · #3 22-Feb-2005, 01:40

Quote:

Originally Posted by Max Payne

I think no one rplys to your original post because thay can't help without you decribing in more detail what actually you want to do...

is it dialog or sdi application?? is it a context menu or you want to rplace the main menu??? and what is it you do in the OnDraw function that you want to link to...

it is an SDI application. i created a context menu. in the ondraw function i drew up a grid. i want to know how to display the grid if i clk a cell,by name grid, in the menu.pls tell me

kumaran · #4 22-Feb-2005, 21:43

hi
im repeating the same problem,someone pls help me. mine is an SDI appln.
i created a context menu. i had a cell in that context menu by name 'grid'
on clicking which i should get a grid drawn. i have already written the coding
for the grid in the 'ondraw' function of view class. so now i need to know how
to call it. hope im clear. pls reply me.

Max Payne · #5 23-Feb-2005, 19:12

Hi,

for a context menu, there is a function which handles the contect menu creation and manipulation.its called the OnContextMenu, open your class wizard and search for this function and add it to your proect..

CPP / C++ / C Code:

void CContextView::OnContextMenu(CWnd* pWnd, CPoint point) 
{
	// TODO: Add your message handler code here
	ClientToScreen(&point);
	CMenu Menu;
	Menu.CreatePopupMenu();
	Menu.InsertMenu(1, MF_BYPOSITION, ID_FIRST, "First");
	Menu.InsertMenu(2, MF_BYPOSITION, ID_SECOND, "Second");
	Menu.TrackPopupMenu(TPM_LEFTALIGN, point.x, point.y, this);
}

the above example is for creating a menu without using the resource editor, here is an example of how to create a menu from the resourse editor..

CPP / C++ / C Code:

void CContextView::OnContextMenu(CWnd* pWnd, CPoint pt) 
{
	// TODO: Add your message handler code here
	ClientToScreen(&pt);
	CMenu Menu;
             Menu.LoadMenu(IDR_CONTEXT_MENU);
	Menu.GetSubMenu(0)->TrackPopupMenu(TPM_CENTERALIGN|TPM_RIGHTBUTTON,pt.x,pt.y,this);
		
            
	Menu.TrackPopupMenu(TPM_LEFTALIGN, pt.x, pt.y, this);
}

now how do you handle mesage for each menu item, ID_FIRST, and ID_SECOND?? put it in your message map..

CPP / C++ / C Code:

BEGIN_MESSAGE_MAP(CContextMenuSDIDemoView, CView)
	//{{AFX_MSG_MAP(CContextMenuSDIDemoView)
	ON_COMMAND(ID_FIRST, OnTestFirst)
	ON_COMMAND(ID_SCOND, OnTestSecond)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CContextMenuSDIDemoView::OnTestFirst() 
{
	// TODO: Add your command handler code here
	Show your grid 1 here
}

void CContextMenuSDIDemoView::OnTestSecond() 
{
	// TODO: Add your command handler code here
	show your grid 2 here
}

BTW: the code above might not run properly, since I don't have a VC++ on my pc to test it, so use it as a guide...

kumaran · #6 24-Feb-2005, 00:09

hi,
thanks a lot. i want 2 know how to call the ondraw function of viewclass
if i click the menu which i created.while trying that i got 3 error which i
have mentioned below:

error C2143: syntax error : missing ';' before '*'
error C2501: 'CSamDoc' : missing storage-class or type specifiers
error C2501: 'GetDocument' : missing storage-class or type specifiers

i've declared the viewclass header file in the corresponding class of the
resource. i donno whether is it rcorrect or not.

iam beginner in vc++, so if u find any of
my doubts to be silly pls bear with me.

Max Payne · #7 24-Feb-2005, 00:53

First: don't call your OnDraw function on your own, it is reserver for the windows to call on event of WM_PAINT !!

can you post what code is in the OnDraw function, maybe we can figure out to write the code on another function, not in OnDraw.

and also post the line of code which produce the error. and also where did you include the view class header file??

Quote:

iam beginner in vc++, so if u find any of
my doubts to be silly pls bear with me.

i don't find your doubt is silly, but you should be more detail in xplaining your problem, no one is a magician here who could guess and figure out your problems... you must explaine in detail, what you want to do, post some of your codes involved...

kumaran · #8 24-Feb-2005, 02:29

hi
to write the entire coding, that is in my ondraw function, here will be too lengthy. to tell u wats there,it is just to print a grid(simply by using MOVETO,LINETO etc).

the code that produces error is in samview.h file('sam' is my proj name)
it is as follows.

public:
CSamDoc* GetDocument(); --all three errors which i said earlier points to this line only.

i included the view class header file in the mainframe.cpp file. as the menu which i created is in the mainframe class.

i wanted to know how to print the grid if i click the menu. i mainly want to know how to call ondraw function when i click the menu.

Max Payne · #9 24-Feb-2005, 02:53

Ok, figure how to clear the error first:

your context menu is for your view right? so put your context menu in your view class, don't touch the mainframe class, so no need to include the view class there, and move your code for the context mnu to the view class..

Now, OnDraw should not be called directly, so make a new function say "DrawGrid()" and cut and paste the code in OnDraw to the new function, then call that function from your OnDraw()..

and onCommand for the context menu, call also the DrawGrid function..

did that solve your problem? if no, please post your coding, or attach the file involved..

Max Payne · #10 24-Feb-2005, 03:04

BTW: I recomended the context menu is handled in the view class becaus its supposed to be the context menu for the view, and its a lot neater handling it from the view class...

but you also can proceed what youre doing but then itll be a litle messy as you have to call the memberfunction of the view class from the mainframe by casting pointer to the class...

so, if you want to manage the context menu in the mainframe.. just

#include "CSamDoc.h"
#include "CSamView.h"

to the mainframe.cpp.

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