poIImagePlane SetVisibility
Sets the visibility setting for the image plane.
Syntax
Imageplane_handle SetVisibilitystate
Application
HyperView Tcl Modify
Description
The visibility flag indicates whether the image plane will be drawn or remain invisible. This command alters the visibility.
Inputs
- state
- True to make the image plane visible, False to make it invisible.
Example
hwi OpenStack
if {[catch {
hwi OpenStack
hwi GetSessionHandle session_handle
session_handle GetProjectHandle project_handle
project_handle GetPageHandle page_handle [project_handle GetActivePage]
page_handle GetWindowHandle window_handle [page_handle GetActiveWindow]
window_handle GetClientHandle client_handle
client_handle GetImagePlaneCtrlHandle ipc_handle
set ipid1 [ipc_handle AddImagePlane Logo1]
ipc_handle GetImagePlaneHandle imageplane_handle $ipid1
imageplane_handle SetFileName g:/samples2/VideoOverlay/logo1.jpg
imageplane_handle SetMode background
imageplane_handle ReleaseHandle
set ipid2 [ipc_handle AddImagePlane Video1]
ipc_handle GetImagePlaneHandle imageplane_handle $ipid2
imageplane_handle SetFileName g:/samples2/VideoOverlay/video1.jpg
imageplane_handle SetMode background
imageplane_handle ReleaseHandle
ipc_handle GetImagePlaneHandle imageplane_handle $ipid1
imageplane_handle SetVisibility false
client_handle Draw
} result]} {
global errorInfo;
puts stderr $result;
puts "[session_handle GetError]";
puts stderr "*** Tcl TRACE ***";
puts stderr $errorInfo;
} else {
puts "No errors.";
puts "Warnings: ";
puts " [session_handle GetError]";
}
hwi CloseStack
Errors
Returns HW_InvalidHandle if the image plane handle is invalid.