Help my mingW64 has a handicap or my code (help)

[cool1coder]

So this is my code (i am trying to make a little joke virus for my friend)

#include <windows.h>
#include
#include <time.h>
void invertscreen() {
int x, y;
x = GetSystemMetrics(SM_CXSCREEN);
y = GetSystemMetrics(SM_CXSCREEN);
while (0 == 0) {
int randx, randy;
randx = rand() % x + 0;
randy = rand() % x + 0;
BitBlt(GetDC(NULL),rand() % x + 0, rand() % y + 0, randx + 200,randy+200,GetDC(NULL),randx,randy,NOTSRCCOPY);
}
}

int main()
{
invertscreen();
}

now once compiling i get this error: c:/mingw/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: C:\Users\mverb\AppData\Local\Temp\cchWKwR9.o:main.cpp:(.text+0xc2): undefined reference to `__imp_BitBlt'
collect2.exe: error: ld returned 1 exit status

if you know please help before i get a handicap :D

[Biswa96]

You have to link it properly. Add -lgdi32 linker option while compiling. See https://learn.microsoft.com/en-us/windows/win32/api/wingdi/nf-wingdi-bitblt