Set an icon or get an icon count
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WSupported on Windows
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NSupported in Synergy .NET
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status = %U_ICON(D_ICONSET, filename, index[, window_id]) status = %U_ICON(D_ICONCOUNT, filename, count)
or
xcall U_ICON(D_ICONSET, filename, index[, window_id]) xcall U_ICON(D_ICONCOUNT, filename, count)
Return value
status
On Windows, true (1) if the icon file exists and contains icons, or false (0) if the icon file does not exist or contains no icons. On Unix and OpenVMS, always returns false. (^VAL)
Arguments
D_ICONSET
Set an icon. (n)
filename
The name of the file that contains the icon to set or the icons to count. (a)
index
The icon index for D_ICONSET (l-based). (n)
window_id
(optional) The ID of the window. (n)
D_ICONCOUNT
Get the count of icons in the file. (n)
count
The icon count returned from D_ICONCOUNT. (n)
Discussion
%U_ICON sets an icon for a window or gets a count of icons in a file.
Filename can be an .ico file, a DLL, an executable program (.exe), or a bitmap image (.bmp). You can use environment variables in filename.
In Synergy .NET, this routine works only for the container window, and it uses only the first icon in the icon file. It ignores the index and count arguments (though you still must pass them) and the window_id argument.
Setting an icon for a window
To set an icon for a window, pass D_ICONSET and the index (1-based) for the icon (i.e., pass the icon’s position in the file). An index value of 0 will set the icon to the default Windows system icon. For an .ico file, you must pass 1 as index.
Window_id determines which window the icon will be applied to:
- To apply the icon to the application window, omit window_id or pass zero. In either case, the icon is displayed in the About box if U_ABOUT is subsequently called, and the application uses the icon for its system menu and its taskbar button.
- To apply the icon to a window other than the application window, pass the window ID as window_id. In this case, the icon is used for the system menu, which is displayed if a close, move, size, minimize or maximize method is associated with the window. It can also be used if a DLL routine adds a system menu, changes the window frame style, or minimizes the window.
If you don’t specify an icon, the default is the Synergy runtime icon.
Getting a count of icons in a file
To get a count of icons in a file, pass D_ICONCOUNT and a variable as count to accept the returned count.
See also
%L_ICON routine for setting a list icon
Examples
The following example sets the application icon to the third icon in a file named iconfil.dll. If the icon cannot be found, an error is displayed.
if (.not.(%u_icon(D_ICONSET, "iconfil.dll", 3)))
xcall u_message("Could not set icon")
