Undefined reference to alphablend

[Yedboy]

I'm trying to test blur C++ effect but it says "Undefined reference to alphablend" what to do?

[ImAurs]

This should be a problem with the compiler Can you link the msimg32.lib library file?

[Yedboy]

I linked msimg32.lib. Still the same thing.

[ImAurs]

Are you include wingdi.h in code?

[Yedboy]

oh thanks

[Yedboy]

keeps saying undefined reference to `_imp__AlphaBlend@44'

[ImAurs]

Are you linked msimg32.lib in code? try link msimg32.lib in linker options

[Yedboy]

where to find compiler options

[ImAurs]

First open your project and click "Tools"Button, and click to "Compiler Options", "Add the following commands when calling the linker" the following input box

[ImAurs]

I wrote some code: #include <windows.h> #include <wingdi.h>

int main() { AlphaBlend(NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL); return 0; } linker not say "Undefined reference to alphablend" Can you try the code?(replace "NULL" to your paramet pls)

[Yedboy]

It says 5 72 C:\Users\DELL\OneDrive\Escritorio\main.cpp [Error] could not convert '0' from 'int' to 'BLENDFUNCTION' {aka '_BLENDFUNCTION'}

[ImAurs]

replace "NULL" to your paramet pls.........

[Yedboy]

I did replace NULL to my paramet

[ImAurs]

emm

[Yedboy]

emm

Can you make a video of how to do it so i understand? I'm a cpp newbie

[ImAurs]

Do you have test code?

[Yedboy]

I said make a video ._.

[ImAurs]

That's right, but I don't have instance code and I don't know much about Windows graphics APIs

[Yedboy]

I mean the video of how to link it

[ImAurs]

emm

[checkdigits]

emm

Does this mean you will produce a video or not?

[ImAurs]

I don't know.

[ImAurs]

This is the reason for the Windows API and "It says 5 72 C:\Users\DELL\OneDrive\Escritorio\main.cpp [Error] could not convert '0' from 'int' to 'BLENDFUNCTION' {aka '_BLENDFUNCTION'}" This error is because an int value was passed in a parameter of AlphaBlend instead of BLENDFUTURE (without type conversion)

[Yedboy]

oh i realized i was a dumbass i needed to add it to linker, and now it works, thx