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47 lines
1.4 KiB
C++
47 lines
1.4 KiB
C++
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#include "./mldwm.h"
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typedef HRESULT (WINAPI *DWMSETWINDOWATTRIBUTE)(HWND /*hwnd*/, DWORD /*dwAttribute*/, LPCVOID /*pvAttribute*/, DWORD /*cbAttribute*/);
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typedef HRESULT (WINAPI *DWMISCOMPOSITIONENABLED)(BOOL* /*pfEnabled*/);
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static HMODULE hDwmModule = NULL;
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static HRESULT loadResult = E_MLDWM_NOTLOADED;
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static DWMSETWINDOWATTRIBUTE fnSetWindowAttribute = NULL;
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static DWMISCOMPOSITIONENABLED fnIsCompositionEnabled = NULL;
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HRESULT MlDwm_IsLoaded()
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{
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return loadResult;
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}
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HRESULT MlDwm_LoadLibrary(void)
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{
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if (E_MLDWM_NOTLOADED == loadResult)
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{
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hDwmModule = LoadLibraryW(L"dwmapi.dll");
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if (!hDwmModule) loadResult = E_MLDWM_LOADFAILED;
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else
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{
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fnSetWindowAttribute = (DWMSETWINDOWATTRIBUTE)GetProcAddress(hDwmModule, "DwmSetWindowAttribute");
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fnIsCompositionEnabled = (DWMISCOMPOSITIONENABLED)GetProcAddress(hDwmModule, "DwmIsCompositionEnabled");
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loadResult = S_OK;
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}
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}
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return loadResult;
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}
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HRESULT MlDwm_SetWindowAttribute(HWND hwnd, DWORD dwAttribute, LPCVOID pvAttribute, DWORD cbAttribute)
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{
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if (!hDwmModule) return loadResult;
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if (!fnSetWindowAttribute) return E_MLDWM_BADFUNCTION;
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return fnSetWindowAttribute(hwnd, dwAttribute, pvAttribute, cbAttribute);
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}
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HRESULT MlDwm_IsCompositionEnabled(BOOL *pfEnabled)
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{
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if (!hDwmModule) return loadResult;
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if (!fnIsCompositionEnabled) return E_MLDWM_BADFUNCTION;
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return fnIsCompositionEnabled(pfEnabled);
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}
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