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[c-host] Enable secure desktop capture using SetThreadDesktop

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Closes #263 - Credit to https://github.com/DataBeaver for this gem!
This commit is contained in:
Geoffrey McRae 2020-04-12 13:35:40 +10:00
parent dbd7db7787
commit d3836d4548
2 changed files with 23 additions and 1 deletions
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2
VERSION
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@ -1 +1 @@
B1-166-g1222fd40b7+1
B1-167-gdbd7db7787+1

22
c-host/platform/Windows/capture/DXGI/src/dxgi.c
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@ -56,6 +56,7 @@ struct iface
LARGE_INTEGER perfFreq;
LARGE_INTEGER frameTime;
bool stop;
HDESK desktop;
IDXGIFactory1 * factory;
IDXGIAdapter1 * adapter;
IDXGIOutput * output;
@ -172,6 +173,27 @@ static bool dxgi_init()
{
assert(this);
this->desktop = OpenInputDesktop(0, FALSE, GENERIC_READ);
if (!this->desktop)
DEBUG_WINERROR("Failed to open the desktop", GetLastError());
else
{
if (!SetThreadDesktop(this->desktop))
{
DEBUG_WINERROR("Failed to set thread desktop", GetLastError());
CloseDesktop(this->desktop);
this->desktop = NULL;
}
}
if (!this->desktop)
{
DEBUG_INFO("The above error(s) will prevent LG from being able to capture the secure desktop (UAC dialogs)");
DEBUG_INFO("This is not a failure, please do not report this as an issue.");
DEBUG_INFO("To fix this run LG using the PsExec SysInternals tool from Microsoft.");
DEBUG_INFO("https://docs.microsoft.com/en-us/sysinternals/downloads/psexec");
}
// this is required for DXGI 1.5 support to function
if (!dpiDone)
{