82 lines
2.0 KiB
C++
82 lines
2.0 KiB
C++
// 28 april 2019
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#include "winapi.hpp"
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#include "winhresult.hpp"
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// This file wraps standard Windows API functions that don't use HRESULTs to return HRESULTs.
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// It also calls SetLastError(0) before each such call.
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static inline HRESULT lastErrorCodeToHRESULT(DWORD lastError)
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{
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if (lastError == 0)
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return E_FAIL;
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return HRESULT_FROM_WIN32(lastError);
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}
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static inline HRESULT lastErrorToHRESULT(void)
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{
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return lastErrorCodeToHRESULT(GetLastError());
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}
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HRESULT WINAPI uiprivHrRegisterClassW(const WNDCLASSW *wc)
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{
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ATOM a;
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SetLastError(0);
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a = RegisterClassW(wc);
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if (a == 0)
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return lastErrorToHRESULT();
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return S_OK;
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}
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HRESULT WINAPI uiprivHrCreateWindowExW(DWORD exStyle, LPCWSTR className, LPCWSTR windowName, DWORD style, int x, int y, int width, int height, HWND parent, HMENU menu, HINSTANCE hInstance, LPVOID lpParam, HWND *hwnd)
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{
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SetLastError(0);
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*hwnd = CreateWindowExW(exStyle,
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className, windowName,
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style,
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x, y, width, height,
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parent, menu, hInstance, lpParam);
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if (*hwnd == NULL)
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return lastErrorToHRESULT();
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return S_OK;
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}
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// TODO turn ret into S_OK/S_FALSE?
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HRESULT WINAPI uiprivHrGetMessageW(LPMSG msg, HWND hwnd, UINT filterMin, UINT filterMax, BOOL *ret)
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{
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SetLastError(0);
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*ret = GetMessageW(msg, hwnd, filterMin, filterMax);
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if (*ret < 0)
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return lastErrorToHRESULT();
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return S_OK;
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}
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HRESULT WINAPI uiprivHrPostMessageW(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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BOOL ret;
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SetLastError(0);
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ret = PostMessageW(hwnd, uMsg, wParam, lParam);
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if (ret == 0)
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return lastErrorToHRESULT();
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return S_OK;
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}
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HRESULT WINAPI uiprivHrLoadIconW(HINSTANCE hInstance, LPCWSTR name, HICON *hIcon)
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{
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SetLastError(0);
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*hIcon = LoadIconW(hInstance, name);
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if (*hIcon == NULL)
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return lastErrorToHRESULT();
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return S_OK;
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}
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HRESULT WINAPI uiprivHrLoadCursorW(HINSTANCE hInstance, LPCWSTR name, HCURSOR *hCursor)
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{
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SetLastError(0);
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*hCursor = LoadCursorW(hInstance, name);
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if (*hCursor == NULL)
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return lastErrorToHRESULT();
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return S_OK;
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}
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