[X2Go-Commits] [nx-libs] 125/219: Screen.c: add nxagentIsParentOf helper

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Sat Sep 28 12:10:35 CEST 2019


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x2go pushed a commit to branch 3.6.x
in repository nx-libs.

commit d32706888f83b91d6feab93067d1207c507335fa
Author: Ulrich Sibiller <uli42 at gmx.de>
Date:   Wed Jun 26 18:50:44 2019 +0200

    Screen.c: add nxagentIsParentOf helper
---
 nx-X11/programs/Xserver/hw/nxagent/Screen.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/nx-X11/programs/Xserver/hw/nxagent/Screen.c b/nx-X11/programs/Xserver/hw/nxagent/Screen.c
index 6ec4b245f..4e466b502 100644
--- a/nx-X11/programs/Xserver/hw/nxagent/Screen.c
+++ b/nx-X11/programs/Xserver/hw/nxagent/Screen.c
@@ -297,6 +297,28 @@ void nxagentSetPixmapFormats(ScreenInfo *screenInfo)
   }
 }
 
+/* check if possible_parent is parent of candidate */
+Bool nxagentIsParentOf(Display *d, Window possible_parent, Window candidate)
+{
+  Window parent, root, *children = NULL;
+  unsigned int num_children;
+
+  if (XQueryTree(d, candidate, &root, &parent, &children, &num_children))
+  {
+    if (children)
+      XFree((char *)children);
+
+    #ifdef TEST
+    fprintf(stderr, "%s: parent of full screen window [%p] root [%p] possible_parent [%p] candidate [%p]\n", __func__, parent, root, possible_parent, candidate);
+    #endif
+    return (parent == possible_parent);
+  }
+  else
+  {
+    return False;
+  }
+}
+
 void nxagentMinimizeFromFullScreen(ScreenPtr pScreen)
 {
   XUnmapWindow(nxagentDisplay, nxagentFullscreenWindow);

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