Thread: linker error

I have such code in windows program:

Code:

switch (message)   {
case WM_PAINT:
             HDC hDC;
             PAINTSTRUCT ps;
             hDC=BeginPaint(hwnd, &ps);
                  MoveToEx(hDC, 0, 0, NULL);
                  LineTo(hDC, 50, 50);
             EndPaint(hwnd, &ps);
}

The code without MoveToEx and LineTo works, but with them it gives those errors:

C:\DOCUME~1\ANDRES~1\LOCALS~1\Temp\ccKoaaaa.o(.tex t+0x2b1) In function `Z15WindowProcedureP6HWND__jjl':

[Linker error] undefined reference to `MoveToEx@16'
[Linker error] undefined reference to `LineTo@12'

C:\DOCUME~1\ANDRES~1\LOCALS~1\Temp\ccKoaaaa.o(.tex t+0x2b1) ld returned 1 exit status

I use Dev-C++ Compiler. I have tryed other such graphic functions, but they don't work. Always the same errors. What would be wrong with it?

Link to gdi32.lib. Or probably libgdi32.a

How can I do this?

One program I know used
#pragma comment(lib,"libname")

If you mean that line, it doesn't work. I tryed it. Errors are same.

under project -> project options there is a parameters tab, and also a directories tab

you can put the linking info in those.

Thank you! I succeeded compiling that file. No errors.