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GUACAMOLE-1997: Fix issue on screen resize with freerdp >= 3.8.0. #563

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Nov 9, 2024
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GUACAMOLE-1997: Fix issue on screen resize with freerdp >= 3.8.0. #563

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9 changes: 8 additions & 1 deletion src/protocols/rdp/gdi.c
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Original file line number Diff line number Diff line change
Expand Up @@ -99,7 +99,14 @@ BOOL guac_rdp_gdi_end_paint(rdpContext* context) {

guac_display_layer* default_layer = guac_display_default_layer(rdp_client->display);
guac_display_layer_raw_context* current_context = rdp_client->current_context;
GUAC_ASSERT(current_context != NULL);

/* Handle the case where EndPaint was called without a preceding BeginPaint.
* This can occur during screen resize events in "display-update" mode with
* FreeRDP version 3.8.0 or later, where EndPaint is called to ensure the
* update-lock is released and data is flushed before resizing. See the
* associated FreeRDP PR: https://github.com/FreeRDP/FreeRDP/pull/10488 */
if (current_context == NULL)
return TRUE;

/* Ignore paint if GDI output is suppressed */
if (gdi->suppressOutput)
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