LOGPEN Structure

The LOGPEN structure defines the style, width, and color of a pen, a drawing object used to draw lines and borders. The CPen::CreatePenIndirect function uses the LOGPEN structure.

typedef struct tagLOGPEN {  /* lgpn */ 
   UINT lopnStyle; 
   POINT lopnWidth; 
   COLORREF lopnColor; 
} LOGPEN;

Parameters

  • lopnStyle
    Specifies the pen type. This member can be one of the following values:

    • PS_SOLID   Creates a solid pen.

    • PS_DASH   Creates a dashed pen. (Valid only when the pen width is 1.)

    • PS_DOT   Creates a dotted pen. (Valid only when the pen width is 1.)

    • PS_DASHDOT   Creates a pen with alternating dashes and dots. (Valid only when the pen width is 1.)

    • PS_DASHDOTDOT   Creates a pen with alternating dashes and double dots. (Valid only when the pen width is 1.)

    • PS_NULL   Creates a null pen.

    • PS_INSIDEFRAME   Creates a pen that draws a line inside the frame of closed shapes produced by GDI output functions that specify a bounding rectangle (for example, the Ellipse, Rectangle, RoundRect, Pie, and Chord member functions). When this style is used with GDI output functions that do not specify a bounding rectangle (for example, the LineTo member function), the drawing area of the pen is not limited by a frame.

      If a pen has the PS_INSIDEFRAME style and a color that does not match a color in the logical color table, the pen is drawn with a dithered color. The PS_SOLID pen style cannot be used to create a pen with a dithered color. The PS_INSIDEFRAME style is identical to PS_SOLID if the pen width is less than or equal to 1.

      When the PS_INSIDEFRAME style is used with GDI objects produced by functions other than Ellipse, Rectangle, and RoundRect, the line may not be completely inside the specified frame.

  • lopnWidth
    Specifies the pen width, in logical units. If the lopnWidth member is 0, the pen is 1 pixel wide on raster devices regardless of the current mapping mode.

  • lopnColor
    Specifies the pen color.

Remarks

The y value in the POINT structure for the lopnWidth member is not used.

Requirements

Header: wingdi.h

See Also

Reference

CPen::CreatePenIndirect

Other Resources

Structures, Styles, Callbacks, and Message Maps