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fixed hdc initialization into wf_begin_paint so the region invalidation into wf_end_paint applies to the same hdc

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the objective is that only the updated region(s) are refreshed instead of the whole screen
it's not much a problem for normal FreeRDP usage but becomes a serious issue if the display is processed, forwarded and rendered remotely, as done by web gateways such as Guacamole, FreeRDP-WebConnect and Myrtille (I'm the author of the latter)
This commit is contained in:
cedrozor 2017-10-27 14:30:00 +02:00
parent 510bf8219e
commit b4b9ed6ce6
1 changed files with 2 additions and 2 deletions
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4
client/Windows/wf_client.c
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@ -119,10 +119,10 @@ static BOOL wf_begin_paint(rdpContext* context)
{
HGDI_DC hdc;
if (!context || !context->gdi || !context->gdi->hdc)
if (!context || !context->gdi || !context->gdi->primary || !context->gdi->primary->hdc)
return FALSE;
hdc = context->gdi->hdc;
hdc = context->gdi->primary->hdc;
if (!hdc || !hdc->hwnd || !hdc->hwnd->invalid)
return FALSE;