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Issue #1606 - Add support for multi-monitor DPI awareness v2 (W10 1706+)

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This commit is contained in:
Moonchild 2020-10-06 09:23:59 +00:00 • committed by roytam1
commit 810ce6aa74
4 changed files with 33 additions and 11 deletions
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21
widget/windows/WinUtils.h
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@ -96,6 +96,11 @@ typedef enum DPI_AWARENESS {
#define DPI_AWARENESS_CONTEXT_DECLARED
#endif // (DPI_AWARENESS_CONTEXT_DECLARED)
#if WINVER < 0x0605
WINUSERAPI DPI_AWARENESS_CONTEXT WINAPI GetThreadDpiAwarenessContext();
WINUSERAPI BOOL WINAPI
AreDpiAwarenessContextsEqual(DPI_AWARENESS_CONTEXT, DPI_AWARENESS_CONTEXT);
#endif /* WINVER < 0x0605 */
typedef DPI_AWARENESS_CONTEXT(WINAPI * SetThreadDpiAwarenessContextProc)(DPI_AWARENESS_CONTEXT);
typedef BOOL(WINAPI * EnableNonClientDpiScalingProc)(HWND);
@ -152,6 +157,12 @@ class WinUtils
static SetThreadDpiAwarenessContextProc sSetThreadDpiAwarenessContext;
static EnableNonClientDpiScalingProc sEnableNonClientDpiScaling;
// Wrapper for DefWindowProc that will enable non-client dpi scaling on the
// window during creation.
static LRESULT WINAPI
NonClientDpiScalingDefWindowProcW(HWND hWnd, UINT msg,
WPARAM wParam, LPARAM lParam);
public:
class AutoSystemDpiAware
{
@ -174,11 +185,11 @@ public:
DPI_AWARENESS_CONTEXT mPrevContext;
};
// Wrapper for DefWindowProc that will enable non-client dpi scaling on the
// window during creation.
static LRESULT WINAPI
NonClientDpiScalingDefWindowProcW(HWND hWnd, UINT msg,
WPARAM wParam, LPARAM lParam);
static decltype(::DefWindowProcW)* GetDefWindowProc() {
return sEnableNonClientDpiScaling ?
NonClientDpiScalingDefWindowProcW :
::DefWindowProcW;
}
/**
* Get the system's default logical-to-physical DPI scaling factor,