Programming Forums > Application Development > C#

hbweb500 · Jul 10th, 2005, 1:17 PM

In the Win32 program I am writing, I refer to different building names by integers so I can store information in arrays. Whenever I need to output this information, however, I need to associate a string with the integer so as the user will actually know what building I am talking about. I made a function to do this.

The first problem is using WSPRINTF().

(Toggle Plain Text)

LPTSTR string;
wsprintf(temp, "%hS","Research Lab");

The above code will compile but not run, as I get a "Cannot Write to Memory" error when I reach this section of the program.

To counter this, I follow MSDN's example. There they use a TCHAR. The problem is, I cant seem to find a way to get the function to return a TCHAR to the program, and get it to work.

Here is the function:

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VOID NameBuilding(int bldng, TCHAR *bldngname)
{
     TCHAR temp[80];
     switch(bldng)
     {
                  case 0:
                  wsprintf(temp, "%S","Metal Mine");
                  break;
                  
                  case 1:
                  wsprintf(temp, "%S","Crystal Mine");
                  break;
                  
                  case 2:
                  wsprintf(temp, "%S","Deuterium Mine");
                  break;
                  
                  case 3:
                  wsprintf(temp, "%S","Solar Plant");
                  break;
                  
                  case 4:
                  wsprintf(temp, "%S","Robotic Plant");
                  break;
                  
                  case 5:
                  wsprintf(temp, "%S","Shipyard");
                  break;
                  
                  case 6:
                  wsprintf(temp, "%S","Metal Storage");
                  break;
                  
                  case 7:
                  wsprintf(temp, "%S","Crystal Storage");
                  break;
                  
                  case 8:
                  wsprintf(temp, "%S","Deuterium Tank");
                  break;
                  
                  case 9:
                  wsprintf(temp, "%S","Research Lab");
                  break;
                  
                  case 10:
                  wsprintf(temp, "%S","Rocket Silo");
                  break;
                  }

// Now here I have tried using the pointer I called for, bldngname, to write directly to the var, but no luck. I have also tried making the temp var a LPSTR and returning it, but it wont work with the WSPRINTF then.

}

And here is what I need to do witht that output:

(Toggle Plain Text)

TCHAR string[80];

wsprintf(string,"%hS",temp);
                   
//where temp is the returned string

I am thinking that the returned data must be a LPSTR or the like, but I just cant seem to figure this out.

Thanks,
Jeffrey

Jul 10th, 2005, 1:17 PM	#1
hbweb500 Newbie Join Date: Jul 2005 Posts: 4 Rep Power: 0	Return Strings in Function In the Win32 program I am writing, I refer to different building names by integers so I can store information in arrays. Whenever I need to output this information, however, I need to associate a string with the integer so as the user will actually know what building I am talking about. I made a function to do this. The first problem is using WSPRINTF(). (Toggle Plain Text) LPTSTR string; wsprintf(temp, "%hS","Research Lab"); LPTSTR string; wsprintf(temp, "%hS","Research Lab"); The above code will compile but not run, as I get a "Cannot Write to Memory" error when I reach this section of the program. To counter this, I follow MSDN's example. There they use a TCHAR. The problem is, I cant seem to find a way to get the function to return a TCHAR to the program, and get it to work. Here is the function: (Toggle Plain Text) VOID NameBuilding(int bldng, TCHAR bldngname) { TCHAR temp[80]; switch(bldng) { case 0: wsprintf(temp, "%S","Metal Mine"); break; case 1: wsprintf(temp, "%S","Crystal Mine"); break; case 2: wsprintf(temp, "%S","Deuterium Mine"); break; case 3: wsprintf(temp, "%S","Solar Plant"); break; case 4: wsprintf(temp, "%S","Robotic Plant"); break; case 5: wsprintf(temp, "%S","Shipyard"); break; case 6: wsprintf(temp, "%S","Metal Storage"); break; case 7: wsprintf(temp, "%S","Crystal Storage"); break; case 8: wsprintf(temp, "%S","Deuterium Tank"); break; case 9: wsprintf(temp, "%S","Research Lab"); break; case 10: wsprintf(temp, "%S","Rocket Silo"); break; } // Now here I have tried using the pointer I called for, bldngname, to write directly to the var, but no luck. I have also tried making the temp var a LPSTR and returning it, but it wont work with the WSPRINTF then. } VOID NameBuilding(int bldng, TCHAR bldngname) { TCHAR temp[80]; switch(bldng) { case 0: wsprintf(temp, "%S","Metal Mine"); break; case 1: wsprintf(temp, "%S","Crystal Mine"); break; case 2: wsprintf(temp, "%S","Deuterium Mine"); break; case 3: wsprintf(temp, "%S","Solar Plant"); break; case 4: wsprintf(temp, "%S","Robotic Plant"); break; case 5: wsprintf(temp, "%S","Shipyard"); break; case 6: wsprintf(temp, "%S","Metal Storage"); break; case 7: wsprintf(temp, "%S","Crystal Storage"); break; case 8: wsprintf(temp, "%S","Deuterium Tank"); break; case 9: wsprintf(temp, "%S","Research Lab"); break; case 10: wsprintf(temp, "%S","Rocket Silo"); break; } // Now here I have tried using the pointer I called for, bldngname, to write directly to the var, but no luck. I have also tried making the temp var a LPSTR and returning it, but it wont work with the WSPRINTF then. } And here is what I need to do witht that output: (Toggle Plain Text) TCHAR string[80]; wsprintf(string,"%hS",temp); //where temp is the returned string TCHAR string[80]; wsprintf(string,"%hS",temp); //where temp is the returned string I am thinking that the returned data must be a LPSTR or the like, but I just cant seem to figure this out. Thanks, Jeffrey

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Programming Forums > Application Development > C#

Return Strings in Function