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#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);
}
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