How to initialize a variable of data type const WCHAR*

Question

GdipCreateFontFamilyFromName first parameter expects a const WCHAR* , how I could initialize the value of opt.fontName with it?

struct GDImDrawText
{
    HWND hWnd;
    ARGB fontColor;
    int fontSize;
    int fontStyle = 0;
    WCHAR* fontName;  // <--- Do i need to use another data type? which?
    int x = 0;
    int y = 0;
    int w;
    int h;
};  

//...

GDI gdip;
GDImDrawText opt;

opt.fontColor = 0xffffff;
opt.fontSize = 14; 
opt.fontName = L"Tahoma"; // <--- ???
opt.hWnd = hWnd; 
opt.x = 20;

gdip.mDrawText(g, opt);

//...

void GDI::mDrawText(GpGraphics* g, GDImDrawText opt)
{
    GpFontFamily* fontFamily;
    GdipCreateFontFamilyFromName(opt.fontName, 0, &fontFamily);
    //...
}

Do I need to modify the declaration of fontName into the struct?

Answer 1

WCHAR is a wide character normally representing 16 bit instead of the default 8 bit of a char . It is used eg to represent encoding standards like UTF-16 which can not be encoded with only 8 bits (like ASCII).

You initialized your wide char array correctly by specifying it with the L in front of the string. This tells the compiler that the string is in fact a wide char array instead of a "normal" char array .