[Mac OS X] [Win32] Frame-transparency patch

[Seiji Zenitani]

Hi,





===========


1. Target operating systems

* Mac OSX  :   'Carbon Emacs'
* Windows XP, 2000, ME :   'NTEmacs'


2. How to build

* Mac OSX


* MS Windows

CFLAGS=-DUSE_TRANSPARENCY


3. Parameters

Two frame parameters are introduced:

* active-alpha : window opacity of the frontmost frame.
* inactive-alpha : window opacity of non-active frames.




4. sample settings

To set frame-transparency of the current frame

        ;; active frame
        (set-frame-parameter (selected-frame) 'active-alpha 0.9)
        ;; non active frame
        (set-frame-parameter (selected-frame) 'inactive-alpha 0.8)

To set the default frame parameters

        (setq default-frame-alist
              (append
               (list
                '(active-alpha . 0.9)  ;; active frame
                '(inactive-alpha . 0.8) ;; non active frame
                ) default-frame-alist)
              )

5. authors

Ryo Yoshitake, Takashi Hiromatsu, Seiji Zenitani

contact: [EMAIL PROTECTED]


===========


Sincerely,


Seiji Zenitani
[EMAIL PROTECTED]

the attached patch provides frame-transparency to Emacs on Mac OSX and Windows. We are happy if it will be merged into the main emacs code. Frame-transparency is automatically enabled when compiled on Mac OSX 10.2 or later. If you use Windows XP, 2000 or ME, add manually the below switch when configuring. Window opacity will be set by using a float value between 0.0 (invisible) to 1.0 (completely opaque). By default they are set to 1.0.

transparency2.patch
Description: Binary data

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