Goto your res folder as shown in image below add a background image.

After adding a background image, goto the main.xml and add the below text:

<ImageView
android:layout_height=”wrap_content”
android:layout_width=”wrap_content”
android:src=”@drawable/background” />

Note: Do not add the extn to the image name, it wont recognize the file and give an error.

Next goto your main class and add the following:

super(context);
// Set the background
this.setBackgroundDrawable(this.getResources().getDrawable(R.drawable.background));

Another way to do this would be:

Resources res = getResources();
Drawable drawable = res.getDrawable(R.drawable.background);

Really good slide show: http://www.cnn.com/SPECIALS/war.casualties/index.html

I had an opportunity to use CListbox. The scenario was that I had to pre populate the list box and display it in a pop up window.

Its very to use listbox when using it in a parent window but when you want to display it in a standalone pop up window, you would get an error.

This is because the data is present only after the window comes into picture completely and is gone when the window disappears. In order to rectify this you would need to over rider the Initdialog method as below:

BOOL OnInitDialog()
{
//check if the parent window dialog is also initialized
if(CDialog::OnInitDialog())
{
//enter the values into the listbox here
}
}

By the above code you can enter into a listbox before its displayed.

Declare the below methods in the header file for getting the list selection changes:
afx_msg void OnLbnSelchangeList1();
afx_msg void OnLbnDblclkList1();

Add them to the message map in the class as below:

BEGIN_MESSAGE_MAP(YourClassname, CWnd)
ON_LBN_SELCHANGE(IDC_LIST1, &YourClassname::OnLbnSelchangeList1)
ON_LBN_DBLCLK(IDC_LIST1, &YourClassname::OnLbnDblclkList1)
END_MESSAGE_MAP()

Over ride them with the functionalities you need as below:
void YourClassname::OnLbnSelchangeList1()
{

}

void YourClassname::OnLbnDblclkList1()
{
// TODO: Add your control notification handler code here
}

Use CArray to get the values:

CArray aryListBoxSel;
aryListBoxSel.SetSize(nCurrentSelected);
m_ListBox1.GetSelItems(nCurrentSelected, aryListBoxSel.GetData());
CString sTitle;
int indexVal = 0;

for(int i=0;i<=aryListBoxSel.GetUpperBound();i++)
{
indexVal = aryListBoxSel.GetAt(i);
m_ListBox1.GetText(indexVal, sTitle);
}
---------------------------------------------------------------------------------------------------
Incase CArray gives a error in vc6 you can do the following:

int Count = m_ListBox1.GetSelCount();
if (Count > 0)
{
int *pSels = new int[Count];
m_ListBox1.GetSelItems(Count,pSels);
for (int i = 0; i < Count;i++)
{
//pSels[i] this is the index of the item that was selected
CString Temp;
m_ListBox1.GetText(pSels[i],Temp);
}
delete [] pSels;
}

You would be getting this error if you tried to use CArray in VC 6. You would need to use some other way to get the values selected in listbox. In my next post I would be showing how to use two different ways to access a CListBox.

One of the simplest ways to detect a leak in your code would be to use debugCRT.

Simple usage:
a. Create you project in visual studio
b. run the project in debug mode, then only you will find the memory leak dumps
int main()
{
_CrtSetDbgFlag(_CRTDBG_CHECK_ALWAYS_DF | _CRTDBG_ALLOC_MEM_DF);
//below call will break where the leak is in the code provided you give the error number as shown in the //dump.
_CrtSetBreakAlloc(108);

// your code here

//Below windows API will dump the leaks
_CrtDumpMemoryLeaks();
return 0;
}

simplest way to do that would be:

typeCharStr fileName = L”C:\\hiddenFile.txt”;
if(CreateFile( fileName.c_str(),
FILE_READ_DATA,
FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
CREATE_NEW,
FILE_ATTRIBUTE_HIDDEN,
NULL ))
printf(“CreateFile failed (%d)\n”, GetLastError());

The above is written in C++ using windows API.

SVN stands for sub version.

Below is the code to create a registry key in VC++. I used visual studio 2008 for this(VC9)

RegCreateKeyEx is the command to create the key. More documentation can be found online@ msdn.

#include “stdafx.h”
#include “Windows.h”

int _tmain(int argc, _TCHAR* argv[])
{
HKEY hOutKey;
RegCreateKeyEx(HKEY_LOCAL_MACHINE,  L”SOFTWARE\\ABC\\Registration\\addkey”,
0, 0, REG_OPTION_NON_VOLATILE, KEY_ALL_ACCESS, NULL, &hOutKey, NULL);

return 0;
}

Simple program to insert an element into a tree, I wrote in c++:

#include
#include
#include

// Define the variables used to store the data
// Use struct, or also you can use arrays to store values into a tree.
// use a struct if you dont know how many elements you would be
// storing into the tree.

struct node
{
int info;
struct node *llink;
struct node *rlink;
};
typedef struct node* NODE;

// value to assign the memory needed
NODE getnode()
{
NODE x;
x = (NODE)malloc(sizeof(struct node));
if(x==NULL)
{
printf(“out of memory\n”);
exit(0);
}
return x;
}

NODE insert(int item, NODE root)
{
char direction[10];
printf(“Enter the directions”);
scanf(“%s”, direction);

NODE temp;
NODE cur;
NODE prev;

temp = getnode();
temp->info = item;
temp->llink = temp->rlink = NULL;

if(root == NULL) return temp;

prev = NULL;
cur = root;

int i=0;
for(i=0;i< strlen(direction) && cur != NULL;i++)
{
prev = cur;
if(direction[i] == 'l')
cur =cur->llink;
else
cur = cur->rlink;
}
if(cur != NULL || i!=strlen(direction))
{
printf(“Insertion Fail”);
//free the memory you allocated. freenode(temp);
return root;
}
if(direction[i-1] == ‘l’)
prev->llink = temp;
else
prev->rlink = temp;

return root;

}

int main()
{
NODE temp;
int item;

NODE root;
insert(1, root);
char c;
do {
c=getchar();
putchar (c);
} while (c != ‘.’);
return 0;

return 0;
}

If you have seen this error while compiling a c++ program on windows using bloodshed dev c++, then you would need to define a main method to resolve this:

int main()
{
return 0;
}

This would solve your issues.