Merge pull request #5 from WinampDesktop/community

Merge to main

1 files changed, 46 insertions, 0 deletions

diff --git a/Src/Plugins/General/gen_ml/mldwm.cpp b/Src/Plugins/General/gen_ml/mldwm.cpp
new file mode 100644
index 00000000..14cdd65f
--- /dev/null
+++ b/Src/Plugins/General/gen_ml/mldwm.cpp
@@ -0,0 +1,46 @@
+#include "./mldwm.h"
+
+typedef HRESULT (WINAPI *DWMSETWINDOWATTRIBUTE)(HWND /*hwnd*/, DWORD /*dwAttribute*/, LPCVOID /*pvAttribute*/, DWORD /*cbAttribute*/);
+typedef HRESULT (WINAPI *DWMISCOMPOSITIONENABLED)(BOOL* /*pfEnabled*/);
+
+static HMODULE hDwmModule = NULL;
+static HRESULT loadResult = E_MLDWM_NOTLOADED;
+
+static DWMSETWINDOWATTRIBUTE fnSetWindowAttribute = NULL;
+static DWMISCOMPOSITIONENABLED fnIsCompositionEnabled = NULL;
+
+HRESULT MlDwm_IsLoaded()
+{
+	return loadResult;
+}
+
+HRESULT MlDwm_LoadLibrary(void)
+{
+	if (E_MLDWM_NOTLOADED == loadResult)
+	{
+		hDwmModule = LoadLibraryW(L"dwmapi.dll");
+		if (!hDwmModule) loadResult = E_MLDWM_LOADFAILED;
+		else
+		{
+			fnSetWindowAttribute = (DWMSETWINDOWATTRIBUTE)GetProcAddress(hDwmModule, "DwmSetWindowAttribute");
+			fnIsCompositionEnabled = (DWMISCOMPOSITIONENABLED)GetProcAddress(hDwmModule, "DwmIsCompositionEnabled");
+			loadResult = S_OK;
+		}
+	}
+	return loadResult;
+}
+
+
+HRESULT MlDwm_SetWindowAttribute(HWND hwnd, DWORD dwAttribute, LPCVOID pvAttribute, DWORD cbAttribute)
+{
+	if (!hDwmModule) return loadResult;
+	if (!fnSetWindowAttribute) return E_MLDWM_BADFUNCTION;
+	return fnSetWindowAttribute(hwnd, dwAttribute, pvAttribute, cbAttribute);
+}
+
+HRESULT MlDwm_IsCompositionEnabled(BOOL *pfEnabled)
+{
+	if (!hDwmModule) return loadResult;
+	if (!fnIsCompositionEnabled) return E_MLDWM_BADFUNCTION;
+	return fnIsCompositionEnabled(pfEnabled);
+}