PATHMac OS 8 and 9 Developer Documentation > Human Interface Toolbox > Window Manager >

Programming With the Mac OS 8.5 Window Manager

MeasureWindowTitleRec

If you implement a custom window definition function, when the Window Manager passes the message kWindowMsgMeasureTitle in your window definition function's message parameter it also passes a pointer to a structure of type MeasureWindowTitleRec in the param parameter. Your window definition function is responsible for setting the contents of the MeasureWindowTitleRec structure to contain data describing the ideal title width.

See Window Definition Message Constants and Window Definition Feature Constants for more details on the kWindowMsgMeasureTitle message and the corresponding kWindowCanMeasureTitle feature flag.

struct MeasureWindowTitleRec
{
/* output parameters*/
    SInt16      fullTitleWidth;     /* text width + proxy icon width */
    SInt16      titleTextWidth;     /* text width only */
/* input parameters*/
    Boolean     isUnicodeTitle;     /* future use */
    Boolean     reserved;           /* future use */
};
typedef struct MeasureWindowTitleRec MeasureWindowTitleRec;
typedef MeasureWindowTitleRec *MeasureWindowTitleRecPtr;

Field descriptions

fullTitleWidth
Your window definition function sets this field to a value specifying the total width in pixels of the window title text and any proxy icon that may be present, ignoring any compression or truncation that might be required when the title is actually drawn. That is, the specified width should be the ideal width that would be used if the window were sufficiently wide to draw the entire title along with a proxy icon. You should measure the title width using the current system font. If no proxy icon is present, this field should have the same value as the titleTextWidth field.
titleTextWidth
Your window definition function sets this field to a value specifying the width in pixels of the window title text, ignoring any compression or truncation that might be required when the title is actually drawn. That is, the specified width should be the ideal width that would be used if the window were sufficiently wide to draw the entire title. You should measure the title width using the current system font.
isUnicodeTitle
Your window definition function may ignore this field; it is reserved for future use.
reserved
Your window definition function may ignore this field; it is reserved for future use.
© 1999 Apple Computer, Inc. – (Last Updated 18 March 99)