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convert char* to DWORD?

For Beginners

Started by nuclear123 October 06, 2011 05:33 AM

4 comments, last by rip-off 12 years, 6 months ago

nuclear123

119

Author

October 06, 2011 05:33 AM







char *string1 = "hithere";



void function(DWORD dwAddy)

{

.

.

}





int main()

{



function( string1 );



return 0;

}

how do i pass the address of my hardcoded string( "hithere" ) into my function and store the address in a DWORD( int ) ? thanks

latent

140

October 06, 2011 05:40 AM

how many bits are in your address? 32? and in DWORD? 32? then you can just cast it:

function( (DWORD)string1 );

whether this is 'safe' or 'correct' or 'best practice' can be the subject of discussion...

Hodgman

52,717

October 06, 2011 05:40 AM

[font="'Courier New"]*reinterpret_cast<DWORD*>(&string1)[/font]

but this is not safe to do according to the standard. It definitely won't work on compilers where [font="'Courier New"]sizeof(DWORD) < sizeof(char*)[/font]

. 22 Racing Series .

nuclear123

119

Author

October 06, 2011 06:05 AM

1 more thing, how do i get visual studio to print me the pointer value of the following?

(*((BYTE*)(dwAddress+i))) ) <---- visual studio will let me breakpoint and hover mouse over variable "dwaddress" and get it's current contents because it's a variable. But how do i make visual studio tell me the value of the casted pointer "(*((BYTE*)(dwAddress+i))) )" when i mouse over it doesnt give me options to view the dereferenced pointer value? how do i make it show me?