Как менять размер шрифта?

case WM_PAINT:
        {
        RECT rect;
        HBRUSH hBrush;
        HFONT hFont;
        hdc = BeginPaint(hWnd, &ps);
 
            
 
        //Logical units are device dependent pixels, so this will create a handle to a logical font that is 48 pixels in height.
        //The width, when set to 0, will cause the font mapper to choose the closest matching value.
        //The font face name will be Impact.
        hFont = CreateFont(48,0,0,0,FW_DONTCARE,FALSE,TRUE,FALSE,DEFAULT_CHARSET,OUT_OUTLINE_PRECIS,
            CLIP_DEFAULT_PRECIS,CLEARTYPE_QUALITY, VARIABLE_PITCH,TEXT("Impact"));
        SelectObject(hdc, hFont);
        
        //Sets the coordinates for the rectangle in which the text is to be formatted.
        SetRect(&rect, 100,100,700,200);
        SetTextColor(hdc, RGB(255,0,0));
        DrawText(hdc, TEXT("Drawing Text with Impact"), -1,&rect, DT_NOCLIP);
        
 
        //Logical units are device dependent pixels, so this will create a handle to a logical font that is 36 pixels in height.
        //The width, when set to 20, will cause the font mapper to choose a font which, in this case, is stretched.
        //The font face name will be Times New Roman.  This time nEscapement is at -300 tenths of a degree (-30 degrees)
        hFont = CreateFont(36,20,-300,0,FW_DONTCARE,FALSE,TRUE,FALSE,DEFAULT_CHARSET,OUT_OUTLINE_PRECIS,
            CLIP_DEFAULT_PRECIS,CLEARTYPE_QUALITY, VARIABLE_PITCH,TEXT("Times New Roman"));
        SelectObject(hdc,hFont);
        
        //Sets the coordinates for the rectangle in which the text is to be formatted.
        SetRect(&rect, 100, 200, 900, 800);
        SetTextColor(hdc, RGB(0,128,0));
        DrawText(hdc, TEXT("Drawing Text with Times New Roman"), -1,&rect, DT_NOCLIP);
        
            
        //Logical units are device dependent pixels, so this will create a handle to a logical font that is 36 pixels in height.
        //The width, when set to 10, will cause the font mapper to choose a font which, in this case, is compressed. 
        //The font face name will be Arial. This time nEscapement is at 250 tenths of a degree (25 degrees)
        hFont = CreateFont(36,10,250,0,FW_DONTCARE,FALSE,TRUE,FALSE,DEFAULT_CHARSET,OUT_OUTLINE_PRECIS,
            CLIP_DEFAULT_PRECIS,ANTIALIASED_QUALITY, VARIABLE_PITCH,TEXT("Arial"));
        SelectObject(hdc,hFont);
 
        //Sets the coordinates for the rectangle in which the text is to be formatted.
        SetRect(&rect, 500, 200, 1400, 600);
        SetTextColor(hdc, RGB(0,0,255));
        DrawText(hdc, TEXT("Drawing Text with Arial"), -1,&rect, DT_NOCLIP);
        DeleteObject(hFont);    
    
    EndPaint(hWnd, &ps);