Problem seeing my window

Problem seeing my window

• moshebs

  Most of the stuff in the generated project doesn't look the same as I am used to. I can't understand most of it. I have had a lot of problems with the switch from 2003 to 2005, and that might have something to do with it. The only code that I have written that works in 2005, works because it is converted when I open it with 2005. But it doesn't change the code, so I don't know what has been changed in it.

  One big problem that I ran into was I got this error when I compiled my code:

  error C2440: '=' : cannot convert from 'const char [14]' to 'LPCWSTR'

  This error was at the places where I typed "Windows Class" and the title of my window. I fixed this by putting global variables as follows:

  TCHAR szWindowClass[100];

  TCHAR szTitle[100];

  But, I can't figure out how to fix that problem when I try to display a bitmap or something because the same error message pops up at the name of my bitmap.

  Would any of this effect why I can't see my window

  
  

• Daniel Wheeler

  Not to try and argue, but I've never needed to do that before, and I've gotten plenty of windows to work.

  Where do I put this, because I've never used it before

  
  

• David Li

  Well, it's really impossible to comment without seeing the code...

   Have you set up a message loop such as this one

   

  while (GetMessage (&msg, NULL, 0, 0))

  {

  TranslateMessage (&msg) ;

  DispatchMessage (&msg) ;

  }

  
  
  

• CJW99

  How do I do that

  I have never had to do that before. Is that something that you have to do with visual studio only

  
  

• d.th

  For string literals, use _T("...")

  So if you had "abc.bmp", it should be modified to _T("abc.bmp")

  That will automatically map it to an Ansi string for a non-Unicode build, and a wide string for a Unicode build.

  Note that VC 2005, by default, generates projects as Unicode.

  nicksmaddog wrote:

  Most of the stuff in the generated project doesn't look the same as I am used to. I can't understand most of it. I have had a lot of problems with the switch from 2003 to 2005, and that might have something to do with it. The only code that I have written that works in 2005, works because it is converted when I open it with 2005. But it doesn't change the code, so I don't know what has been changed in it. One big problem that I ran into was I got this error when I compiled my code: error C2440: '=' : cannot convert from 'const char [14]' to 'LPCWSTR' This error was at the places where I typed "Windows Class" and the title of my window. I fixed this by putting global variables as follows: TCHAR szWindowClass[100]; TCHAR szTitle[100]; But, I can't figure out how to fix that problem when I try to display a bitmap or something because the same error message pops up at the name of my bitmap. Would any of this effect why I can't see my window

  
  
  

• SatishS

  nicksmaddog wrote:

  I tried to put the WS_VISIBLE in like this: CreateWindowEx(NULL, "Windows Class", "TITLE", WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hinstance, NULL); That didn't work...I also tried to put SW_SHOW in like this: ShowWindow(hwnd,SW_SHOW); That didn't work either. I tried both seperately, and together. Any other suggestions, or did I implement the suggestions incorrectly

  Nick

  You know what I think it would be best for you to use the wizard to generate a Win32 project, and take a look at the code. The default code will create and show a window on screen. Looks to me that, that's exactly what you are trying to do, but you've missed out something somewhere.

  
  
  

• Lacko

  I used:

  while(1)

  {

  if(PeekMessage(&msg,NULL,0,0,PM_REMOVE))

  {

  if(msg.message == WM_QUIT)

  break;

  TranslateMessage(&msg);

  DispatchMessage(&msg);

  }

  else

  {

  }

  }

  
  

• Rik C.

  I tried to put the WS_VISIBLE in like this: CreateWindowEx(NULL, "Windows Class", "TITLE", WS_VISIBLE, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hinstance, NULL);

  That didn't work...I also tried to put SW_SHOW in like this: ShowWindow(hwnd,SW_SHOW);

  That didn't work either. I tried both seperately, and together. Any other suggestions, or did I implement the suggestions incorrectly

  
  

• Luu Minh Khoa

  nicksmaddog wrote:

  Not to try and argue, but I've never needed to do that before, and I've gotten plenty of windows to work. Where do I put this, because I've never used it before

  I believe the WS_VISIBLE style dates back to the Win16 days. Anyway, you need to pass that as a style to the CreateWindowEx call.

  Alternatively, you could do a ShowWindow with SW_SHOW - perhaps that explains why you never had to use the WS_VISIBLE style before. Because you'd call ShowWindow later on.

  
  
  

• Kuan-Chu Hou

  Here is my CreateWindow code:

  hwnd = CreateWindowEx(NULL,"Windows Class","TITLE",

  WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,

  CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hinstance,NULL);

  
  

• act_bilbo

  nicksmaddog wrote:

  How do I do that I have never had to do that before. Is that something that you have to do with visual studio only

  Not just with Visual Studio. Any window (including child controls) needs the WS_VISIBLE style to be visible on screen. Some APIs may abstract this away into a SetVisible method or a Visible property, but the underlying code will use WS_VISIBLE on the windows.

  
  
  

• KDR88

  When I use _T("Windows Class") or whatever, I get this error message:

  error C3861: '_T': identifier not found

  
  

• Grant Smith

  nicksmaddog wrote:

  Here is my CreateWindow code: hwnd = CreateWindowEx(NULL,"Windows Class","TITLE", WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT, CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hinstance,NULL);

  You need to specify the WS_VISIBLE style.

  
  
  

• Tariq Mehmood

  nicksmaddog wrote:

  I used: while(1) { if(PeekMessage(&msg,NULL,0,0,PM_REMOVE)) { if(msg.message == WM_QUIT) break; TranslateMessage(&msg); DispatchMessage(&msg); } else { } }

  Could you show your CreateWindow code

  
  
  
• Problem seeing my window