Color Blindness. Color blindness, or color vision deficiency, is the inability or decreased ability to see color, or perceive color differences, under normal lighting conditions.There is no actual blindness.olor Blindness. Color blindness, or color vision deficiency, is the inability or decreased ability to see color, or perceive color differences, under normal lighting conditions. There is no actual blindness.
QString converts the const char * data into Unicode using the fromUtf8 () function. In all of the QString functions that take const char * parameters, the const char * is interpreted as a classic C-style '\0'-terminated string encoded in UTF-8. It is legal for the const char * parameter to be 0.static] QString QString:: fromUcs4 (const uint * unicode, int size = -1). Returns a QString initialized with the first size characters of the Unicode string unicode (ISO-10646-UCS-4 encoded). If size is -1 (default), unicode must be terminated with a 0. This function was introduced in Qt 4.2.
The const keyword specifies that a variable's value is constant and tells the compiler to prevent the programmer from modifying it. In C++, you can use the const keyword instead of the #define preprocessor directive to define constant values. Values defined with const are subject to type checking, and can be used in place of constant expressions. In C++, you can specify the size of an array with a const variable as follows: Copy.