[UI] Use DPI APIs when available.
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@ -47,12 +47,20 @@ bool Win32Window::Initialize() { return OnCreate(); }
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bool Win32Window::OnCreate() {
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HINSTANCE hInstance = GetModuleHandle(nullptr);
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if (!SetProcessDpiAwareness_ || !GetDpiForMonitor_) {
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auto shcore = GetModuleHandle(L"shcore.dll");
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if (shcore) {
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SetProcessDpiAwareness_ =
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GetProcAddress(shcore, "SetProcessDpiAwareness");
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GetDpiForMonitor_ = GetProcAddress(shcore, "GetDpiForMonitor");
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}
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}
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static bool has_registered_class = false;
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if (!has_registered_class) {
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// Tell Windows that we're DPI aware.
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auto spda = (decltype(&SetProcessDpiAwareness))GetProcAddress(
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GetModuleHandle(L"shcore.dll"), "SetProcessDpiAwareness");
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if (spda) {
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if (SetProcessDpiAwareness_) {
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auto spda = (decltype(&SetProcessDpiAwareness))SetProcessDpiAwareness_;
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auto res = spda(PROCESS_PER_MONITOR_DPI_AWARE);
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if (res != S_OK) {
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XELOGE("Failed to set process DPI awareness. (code = 0x%.8X)", res);
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@ -303,11 +311,16 @@ void Win32Window::set_bordered(bool enabled) {
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}
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int Win32Window::get_dpi() const {
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if (!GetDpiForMonitor_) {
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return 96;
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}
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HMONITOR monitor = MonitorFromWindow(hwnd_, MONITOR_DEFAULTTOPRIMARY);
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// According to msdn, x and y are identical...
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UINT dpi_x, dpi_y;
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GetDpiForMonitor(monitor, MDT_DEFAULT, &dpi_x, &dpi_y);
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auto gdfm = (decltype(&GetDpiForMonitor))GetDpiForMonitor_;
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gdfm(monitor, MDT_DEFAULT, &dpi_x, &dpi_y);
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return dpi_x;
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}
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@ -85,6 +85,9 @@ class Win32Window : public Window {
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WINDOWPLACEMENT windowed_pos_ = {0};
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POINT last_mouse_pos_ = {0};
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void* SetProcessDpiAwareness_ = nullptr;
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void* GetDpiForMonitor_ = nullptr;
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};
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class Win32MenuItem : public MenuItem {
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