how use Graphics.h?

[cambalinho]

i use CodeBlocks with mingw compiler.
for use 'Graphics.h', i must add the 'libbgi.a' library.
but i continue with some compiler\linker error: "ld.exe||cannot find -lbgi|".
yes i add the linker options:
"-lbgi -lgdi32 -lcomdlg32 -luuid -loleaut32 -lole32"
heres my testing code:

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#include <iostream>
#include <graphics.h>
#include <conio.h>

using namespace std;

int main()
{
    int gdriver = DETECT, gmode;
    int x1 = 200, y1 = 200;
    int x2 = 300, y2 = 300;
    //clrscr();

    initgraph(&gdriver, &gmode,  NULL);
    line(x1, y1, x2, y2);
    getch();
    closegraph();
    return 0;
}
(i need find, too, the another 'conio.h' too)
maybe the problem it can the library compatibly

[Miguel Gimenez]

Where is libbgi.a? Probably you must add the path to the linker search paths.

Linking problems are best solved if you post a full rebuild log.

[cambalinho]

heres the print:
https://imgur.com/07SJvb7

[Miguel Gimenez]

Does libbgi.a exist in the lib folder?.

You are adding libbgi.a twice. All the "Other linker options" content should be moved to the left with no paths:

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libbgi.a
libgdi32.a
..

The full rebuild log is far better than an image, post it (in code tags) if you have more problems.

[cambalinho]

because the 'libbgi.a' is for the 'graphics.h'.
on past i put it to work... but now i can't

[Miguel Gimenez]

I used it with TurboC 30 years ago, but IIRC it was abandoned.

[cambalinho]

after several time, i found the problems:
1 - the library and the headers files are for Code Blocks 32 bits and not 64 bits;
2 - the files are for "CodeBlocks\MinGW\i686-w64-mingw32\..." and not "CodeBlocks\MinGW\..." folder!!!
the rest is the same(add the library on project and the linker options).
thanks for all to all

[stahta01]

https://cboard.cprogramming.com/cplusplus-programming/181839-how-use-graphics-h-codeblocks.html

Another website with the same question; if the OP wants help, from me, they need to post a build log and post information about the compiler they are using.

Tim S.

[cambalinho]

i know that link but what i found was testing and shooting on dark

[stahta01]

i know that link but what i found was testing and shooting on dark

Next time post the build log or I will put you on ignore!
The build log would have given the error that you were mixing 64 and 32 bits object and we could have help you.

Tim S.

[cambalinho]

i'm sorry, but  do you mean the 'build log' tab page list?
"
-------------- Clean: Debug in testgraphics (compiler: GNU GCC Compiler)---------------

Cleaned "testgraphics - Debug"

-------------- Build: Debug in testgraphics (compiler: GNU GCC Compiler)---------------

x86_64-w64-mingw32-g++.exe -Wall -g -std=gnu++98 -m32  -c C:\Users\Utilizador\Documents\CodeBlocks\testgraphics\Untitled1.cpp -o obj\Debug\Untitled1.o
x86_64-w64-mingw32-g++.exe  -o bin\Debug\testgraphics.exe obj\Debug\Untitled1.o  -m32 -lbgi -lgdi32 -lcomdlg32 -luuid -loleaut32 -lole32  "C:\Program Files (x86)\CodeBlocks\MinGW\i686-w64-mingw32\lib\libbgi.a"
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libgdi32.a when searching for -lgdi32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libgdi32.a when searching for -lgdi32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libgdi32.a when searching for -lgdi32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lgdi32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libcomdlg32.a when searching for -lcomdlg32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libcomdlg32.a when searching for -lcomdlg32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libcomdlg32.a when searching for -lcomdlg32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lcomdlg32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libuuid.a when searching for -luuid
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libuuid.a when searching for -luuid
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libuuid.a when searching for -luuid
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -luuid
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/liboleaut32.a when searching for -loleaut32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\liboleaut32.a when searching for -loleaut32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/liboleaut32.a when searching for -loleaut32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -loleaut32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libole32.a when searching for -lole32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libole32.a when searching for -lole32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libole32.a when searching for -lole32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lole32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libstdc++.dll.a when searching for -lstdc++
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libstdc++.a when searching for -lstdc++
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0\libstdc++.a when searching for -lstdc++
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libstdc++.dll.a when searching for -lstdc++
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/libstdc++.a when searching for -lstdc++
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lstdc++
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libmingw32.a when searching for -lmingw32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libmingw32.a when searching for -lmingw32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libmingw32.a when searching for -lmingw32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lmingw32
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libgcc_s.a when searching for -lgcc_s
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib\libgcc_s.a when searching for -lgcc_s
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: skipping incompatible C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/lib/libgcc_s.a when searching for -lgcc_s
C:/Program Files/CodeBlocks/MinGW/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: cannot find -lgcc_s
//.......................................
collect2.exe: error: ld returned 1 exit status
Process terminated with status 1 (0 minute(s), 2 second(s))
25 error(s), 0 warning(s) (0 minute(s), 2 second(s))"
(i'm testing the Code Blocks 64 bits for understand if these is what you was asking for.. nothing more)

[stahta01]

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x86_64-w64-mingw32-g++.exe -Wall -g -std=gnu++98 -m32

Using -m32 or -m64 almost always result in errors because most MinGW GCC toolchains do not have both sets of libraries.

Tim S.

[nenin]

i know that link but what i found was testing and shooting on dark

If you trying to study C/C++ examples with BGI / Graphics.h are very wrong way to do it. BGI is very old DOS library somehow ported to Win 20 years ago probably with purpose to compile some very old code. 
Here you can find sources  https://github.com/nirin/WinBGI . If you will be lucky enough you can impost VS project and build library for your version of the MinGW. It will be interesting experience, taking in account that gcc is contemporary compiler and 20 y.o. code might not pass requirements of the current  C/C++ standards.

[Miguel Gimenez]

You can use this to build WinBGI:

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CC = g++
OUT_FILE_NAME = winbgi.a
CFLAGS = -fPIC -O0 -g -Wall -c -fpermissive
INC =
OBJ_DIR = obj
OUT_DIR = lib

# Enumerating of every *.cpp as *.o and using that as dependency
$(OUT_FILE_NAME): $(patsubst %.cpp,$(OBJ_DIR)/%.o,$(wildcard *.cpp))
ar -r -o $(OUT_DIR)/$@ $^

#Compiling every *.cpp to *.o
$(OBJ_DIR)/%.o: %.cpp dirmake
$(CC) -c $(INC) $(CFLAGS) -o $@  $<

dirmake:
@if not exist $(OUT_DIR) mkdir $(OUT_DIR)
@if not exist $(OBJ_DIR) mkdir $(OBJ_DIR)

clean:
@if exist $(OBJ_DIR) rmdir /S /Q $(OBJ_DIR)
@if exist $(OUT_DIR)\$(OUT_FILE_NAME) del $(OUT_DIR)\$(OUT_FILE_NAME)
@if exist Makefile.bak del Makefile.bak

rebuild: clean build

Create a file named Makefile in the WinBGI folder, paste the code above, open a console in the WinBGI folder and execute:

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mingw32-make


[omlk]

We also do not forget about .PHONY

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.PHONY: clean dirmake rebuild