pass QImage from one function to another, when the function have different Arguments in ROS

pass QImage from one function to another, when the function have different
Arguments in ROS

pI have two functions. In one function, i have a codeQImage/code and then
i want to pass that QImage to another function. Both the function have
different Arguments. Please tell me how can i do it?/p
precodeImage::function_1(arg1, arg2, arg3) { qimage myImage; }
Image::function_2(arg1) { } /code/pre pI need to have codemyImage/code in
function_2.br I thought of using SIGNAL- SLOT but then i must make
function_2 a SLOT which is not possible./p