C / C++ / MFC

Re: flickering problem when resize the application.

19-Mar-07 18:22

amitmistry_petlad wrote:
I faced the flickering problem when I resize my application how can I removed ?

Override WM_ERASEBKGND and simply return TRUE from it.

amitmistry_petlad wrote:
second thing my conrols aren't resize e.g. listview control

You have to write code your self for that. This[^] article by Paolo Messina should give you some idea.

amitmistry_petlad wrote:
but all the other windows resize.

What do you mean by this ?

Prasad
Notifier using ATL | Operator new[],delete[][^]

amitmistry_petlad 19-Mar-07 18:42

amitmistry_petlad

19-Mar-07 18:42

prasad_som wrote:
You have to write code your self for that. This[^] article by Paolo Messina should give you some idea.

By the help of this example I can reach here bu the problem is below.
I explaine you,
for create the frame window and put some dialogs inside in the following way.

hInst = hInstance; // Store instance handle in our global variable
	//Create parent window		
			
	//hWndStatic=CreateWindow(szWindowClass, szTitle, WS_SYSMENU | WS_MINIMIZEBOX, CW_USEDEFAULT,CW_USEDEFAULT,780,730,NULL,NULL,hInstance, NULL);
	<big>hWndStatic</big>=CreateWindow(szWindowClass, szTitle, WS_SYSMENU | WS_MINIMIZEBOX | WS_THICKFRAME , CW_USEDEFAULT,CW_USEDEFAULT,1090,710,NULL,NULL,hInstance,NULL);
				
	//Create Navigator window
	<big>hWndNavigator</big> = CreateDialog(hInst,MAKEINTRESOURCE(IDD_DIALOG_NAVIGATORORI),hWndStatic,(DLGPROC)NavigatorProc);
	//Create Header window
	<big>hWndHeader</big>    = CreateDialog(hInst,MAKEINTRESOURCE(IDD_DIALOG_HEADER),hWndStatic,(DLGPROC)HeaderProc);
	//Create Footer window
	hWndFooter    = CreateDialog(hInst,MAKEINTRESOURCE(IDD_DIALOG_FOOTER),hWndStatic,(DLGPROC)FooterProc);
	//Create Global List window
	<big>hWndListview</big>  = CreateDialog(hInst,MAKEINTRESOURCE(IDD_DIALOG_LISTVIEW),hWndStatic,(DLGPROC)GlobaListProc);	
	
	//hwndEncrypt = CreateDialog(hInst,MAKEINTRESOURCE(IDD_PROTECTFILES),hWndStatic,(DLGPROC)EncodeProc);
	
	if (!hWndStatic)
	{
	  return FALSE;
	}
	
	//Show parent window
	ShowWindow(hWndStatic, SW_SHOW);
	//Show Navigator window
	ShowWindow(hWndNavigator,SW_SHOW);
	//Show Header window
	ShowWindow(hWndHeader,SW_SHOW);
	//Show footer window
	ShowWindow(hWndFooter,SW_SHOW);	
	ShowWindow(hWndListview,SW_SHOW);		

	//ShowWindow(hwndEncrypt,SW_SHOW);		
		/*ShowWindow(hWndinoutfiledir,SW_SHOW);
		ShowWindow(hWndinoutfiledir,SW_HIDE);*/
		//Send WM_PAINT message to WndProc.
	UpdateWindow(hWndStatic);	
	//CenterWindow(hWndStatic);

	//::PostMessage( hwndTagEditorDlg, WM_COMMAND, MAKELONG( IDC_HIDDEN_BTN, BN_CLICKED ),index);
	Window_Center(hWndStatic);

///// add by amit  for resizing the application

	BEGIN_SIZINGRULES(m_grip, hWndStatic)    //for header window
		
			  ADDRULE(m_grip<big>,hWndListview</big>, RX)
			  ADDRULE(m_grip, <big>hWndHeader</big> , RX)			   
			  ADDRULE(m_grip,<big>hWndNavigator</big>, RY)

	END_SIZINGRULES

    return TRUE;

upon your given link I have already used that one and made the above
BEGIN_SIZINGRULES from that code, but Look at that very carefully , I have made it for windows not for control inside that window, I am inprocess of that but how can I find the clue that windows and controlId.
in the same code. if you might checked Mr.Paolo Messina example.

"Success lies not in the result , But in the efforts !!!!!"
Amit Mistry - petlad -Gujarat-India

Re: flickering problem when resize the application.

prasad_som19-Mar-07 19:07

How can I edit bitmap Image?

19-Mar-07 19:07

amitmistry_petlad wrote:
but Look at that very carefully , I have made it for windows not for control inside that window, I am inprocess of that but how can I find the clue that windows and controlId.
in the same code. if you might checked Mr.Paolo Messina example.

No, I'vent checked that example. But, sure that it will have same problem solution.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Md. Mazharul Islam Khan19-Mar-07 17:31

Md. Mazharul Islam Khan

19-Mar-07 17:31

I need to spray in picture.
and need to apply cross pattern in image.

How can i do that?

Re: How can I edit bitmap Image?

Hamid_RT20-Mar-07 3:08

Hamid_RT

20-Mar-07 3:08

Can you more explain spray in picture?

WhiteSky

SHBrowseForFolder not working in wince 5.0(x86) processor

joemittu19-Mar-07 17:12

joemittu

19-Mar-07 17:12

Dear All,
We need to create an application for folder selection dialog and we have creted using SHBrowseForFolder concept.Using this concept we were able to compile and run the application in Emulator.Whereas when we are trying to run the application in CEPC(x86 processor), it just hangs and shows the message as "Unknown: DEBUGCHK failed in file C:\WINCE500\PUBLIC\SHELL\OAK\HPC\CESHELL\API\.\api.cpp at line 385".It happens when the application issues the api SHBrowseForFolder.Can anyone suggest an idea to solve this problem.
Thanks in Advance.

some problems about listbox control

Chen-XuNuo19-Mar-07 16:41

19-Mar-07 16:41

Recently I study writing program about ListBox control,I ran up some diffculties.
1.I override the virtual funtion MeasureItem() to change the width of the item,I set a breakpoint in the funtion,but when I debug,the program don't run through the breakpoint.In other words,the result is that the width of the item didn't be changed:
void CMyListBox::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{
lpMeasureItemStruct->itemHeight=32;
}

2.I override DrawItem() and add an funtion to initialze the item what is factly is a string.In the funtion DrawItem() I used TextOut() to output what I initialized,but the program appeared a warning.When I run the program,the listbox's item is not the words I initialized:
void CMyListBox::PreSubclassWindow()
{
InitData();
CListBox::PreSubclassWindow();
}
BOOL CMyListBox::InitData()
{
if(m_Inited)
return TRUE;
CString s("OK");
AddString(s);
AddString("1");
m_Inited=TRUE;

return TRUE;
}
void CMyListBox::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
....
if(nIndex != (UINT)-1)
{
//Draw th item.
InflateRect(&rect,-2,-2);
dc.TextOut(rect.left+4,rect.top+2,
lpDrawItemStruct->itemData); //warning
}
....
}

Chen-XuNuo19-Mar-07 16:46

19-Mar-07 16:46

I forgot to tell that I have set the ListBox' properties:
BOOL CMyListBox::PreCreateWindow(CREATESTRUCT& cs)
{
if(!CListBox::PreCreateWindow(cs))
return FALSE;

cs.dwExStyle |=WS_EX_CLIENTEDGE;
cs.style &= ~(LBS_OWNERDRAWVARIABLE | LBS_SORT);
cs.style |= LBS_OWNERDRAWFIXED;

return CListBox::PreCreateWindow(cs);
}

prasad_som19-Mar-07 18:29

19-Mar-07 18:29

IT_DOER wrote:
return CListBox::PreCreateWindow(cs);

Here this line is unnecessary. Change it to return TRUE;

You need to mention what warnings are generated by compiler. And if your list box is Ownerdrawn, MeasureItem should be called.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Chen-XuNuo19-Mar-07 20:31

19-Mar-07 20:31

the warning's content is this:
warning C4244: 'argument' : conversion from 'unsigned long' to 'char', possible loss of data

I have tried many methods of initializing the data,for example,
BOOL CMyListBox::InitData()
{
if(m_Inited)
return TRUE;
CString s("OK");
AddString(s);

//or
//AddString((LPCTSTR)s);

//or
//AddString("OK");

m_Inited=TRUE;

return TRUE;
}
Whether I shouldn't use the TextOut to output the data?

I have checked that the listbox's properties of "OwnerDraw" is set "Fixed",however,I don't know why the MeasureItem don't be called.

prasad_som19-Mar-07 20:51

19-Mar-07 20:51

IT_DOER wrote:
warning C4244: 'argument' : conversion from 'unsigned long' to 'char', possible loss of data

First, get CString* from itemdata and then use it in function.

IT_DOER wrote:
I have checked that the listbox's properties of "OwnerDraw" is set "Fixed",

In this case, MeasureItem will be called once.
Why dont you refer ListBox[^] section on CP? You will find example owner drawn list box.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Chen-XuNuo20-Mar-07 2:16

20-Mar-07 2:16

my god~~I can't work it out yet.I initialized the data like this:
CString s("OK");
AddString((LPCTSTR)s);

and I use it like this:
.....
CString* pt_str=(CString*)lpDrawItemStruct->itemData;
.....
dc.TextOut(lpDrawItemStruct->rcItem.left+4,lpDrawItemStruct->rcItem.top+2,pt_str) //ERROR

D:\MyCode\ChangeCtrlClr\MyListBox.cpp(77) : error C2664: 'int __thiscall CDC::TextOutA(int,int,const class CString &)' : cannot convert parameter 3 from 'class CString *' to 'const class CString &'

the funtion TextOut needs a parameter of "const CString& str", do it needs a point to a CString object?Isn't "pt_str" a point to it?

And I am new here,I don't know what is CP..
Thanks a lot.

prasad_som20-Mar-07 2:21

20-Mar-07 2:21

IT_DOER wrote:
CString* pt_str=(CString*)lpDrawItemStruct->itemData;
.....
dc.TextOut(lpDrawItemStruct->rcItem.left+4,lpDrawItemStruct->rcItem.top+2,pt_str) //ERROR

I think, you are just missing simple C++ thing. Need to listen carefully to compilere.
In this case you are passing pointer where, object reference is needed.
Just modify your code to,

CString* pt_str=(CString*)lpDrawItemStruct->itemData;
 .....
dc.TextOut(lpDrawItemStruct->rcItem.left+4,lpDrawItemStruct->rcItem.top+2,*pt_str);

IT_DOER wrote:
And I am new here,I don't know what is CP..

Refer[^] this link to get faster answers.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Chen-XuNuo20-Mar-07 3:30

20-Mar-07 3:30

prasad_som wrote:
I think, you are just missing simple C++ thing. Need to listen carefully to compilere.
In this case you are passing pointer where, object reference is needed.

I am a student who is a junior in using and like VC++.Well,I will strengthen the basic knowledge of C++.

I modified the code to what you wrote,but when I ran the program,the system poped up a dialog that said there is someting wrong in the program and it need to be closed.And if I set the ListBox'style of OwnerDraw to NO,the program could run normally. Whether I used the pointer incorrectly?

prasad_som20-Mar-07 4:02

20-Mar-07 4:02

Check the CString* for NULL. If its NULL you should not dereference it.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Chen-XuNuo19-Mar-07 16:46

19-Mar-07 16:46

Parthi_Appu19-Mar-07 21:10

Parthi_Appu

19-Mar-07 21:10

IT_DOER wrote:
to change the width of the item

IT_DOER wrote:
void CMyListBox::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct)
{
lpMeasureItemStruct->itemHeight=32;
}

Are you changing width or height?

IT_DOER wrote:
void CMyListBox::PreSubclassWindow()
{
InitData();
CListBox::PreSubclassWindow();
}

Are you subclassing your ListBox? if so please provide the code.

IT_DOER wrote:
void CMyListBox::PreSubclassWindow()
{
InitData();

You are not supposed to add string from the control itself.

And in your reply, you mentioned about an error (unsigned long to char), this is nothig to do with your mesure item method..

Do your Duty and Don't expect the Result

Chen-XuNuo20-Mar-07 2:27

20-Mar-07 2:27

Parthi_Appu wrote:
Are you changing width or height?

OH~I made a mistake,actully I want to change the height of the item.

Parthi_Appu wrote:
Are you subclassing your ListBox? if so please provide the code.

Mm..Could you explain what subclassing mean and the funtion PreSubClassWindow exactly?I don't quite understand them.

Parthi_Appu wrote:
You are not supposed to add string from the control itself.

That how should I do?And the MeasureItem haven't been called.