122 lines
3.2 KiB
C
122 lines
3.2 KiB
C
// 6 april 2015
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#include "uipriv_windows.h"
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HINSTANCE hInstance;
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int nCmdShow;
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HFONT hMessageFont;
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HBRUSH hollowBrush;
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struct uiInitError {
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char *msg;
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char failbuf[256];
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};
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#define initErrorFormat L"error %s: %s%sGetLastError() == %I32u%s"
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#define initErrorArgs wmessage, sysmsg, beforele, le, afterle
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static const char *loadLastError(const char *message)
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{
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WCHAR *sysmsg;
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BOOL hassysmsg;
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WCHAR *beforele;
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WCHAR *afterle;
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int n;
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WCHAR *wmessage;
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WCHAR *wstr;
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const char *str;
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DWORD le;
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le = GetLastError();
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if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, le, 0, (LPWSTR) (&sysmsg), 0, NULL) != 0) {
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hassysmsg = TRUE;
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beforele = L" (";
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afterle = L")";
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} else {
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hassysmsg = FALSE;
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sysmsg = L"";
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beforele = L"";
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afterle = L"";
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}
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wmessage = toUTF16(message);
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n = _scwprintf(initErrorFormat, initErrorArgs);
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wstr = (WCHAR *) uiAlloc((n + 1) * sizeof (WCHAR), "WCHAR[]");
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snwprintf(wstr, n + 1, initErrorFormat, initErrorArgs);
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str = toUTF8(wstr);
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uiFree(wstr);
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if (hassysmsg)
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if (LocalFree(sysmsg) != NULL)
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logLastError("error freeing system message in loadLastError()");
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uiFree(wmessage);
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return str;
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}
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uiInitOptions options;
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const char *uiInit(uiInitOptions *o)
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{
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STARTUPINFOW si;
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const char *ce;
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HICON hDefaultIcon;
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HCURSOR hDefaultCursor;
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NONCLIENTMETRICSW ncm;
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options = *o;
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nCmdShow = SW_SHOWDEFAULT;
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GetStartupInfoW(&si);
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if ((si.dwFlags & STARTF_USESHOWWINDOW) != 0)
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nCmdShow = si.wShowWindow;
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ce = initCommonControls();
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if (ce != NULL)
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return loadLastError(ce);
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hDefaultIcon = LoadIconW(NULL, IDI_APPLICATION);
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if (hDefaultIcon == NULL)
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return loadLastError("loading default icon for window classes");
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hDefaultCursor = LoadCursorW(NULL, IDC_ARROW);
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if (hDefaultCursor == NULL)
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return loadLastError("loading default cursor for window classes");
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if (registerWindowClass(hDefaultIcon, hDefaultCursor) == 0)
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return loadLastError("registering uiWindow window class");
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ZeroMemory(&ncm, sizeof (NONCLIENTMETRICSW));
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ncm.cbSize = sizeof (NONCLIENTMETRICSW);
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if (SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, sizeof (NONCLIENTMETRICSW), &ncm, sizeof (NONCLIENTMETRICSW)) == 0)
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return loadLastError("getting default fonts");
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hMessageFont = CreateFontIndirectW(&(ncm.lfMessageFont));
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if (hMessageFont == NULL)
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return loadLastError("loading default messagebox font; this is the default UI font");
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ce = initContainer(hDefaultIcon, hDefaultCursor);
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if (ce != NULL)
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return loadLastError(ce);
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hollowBrush = (HBRUSH) GetStockObject(HOLLOW_BRUSH);
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if (hollowBrush == NULL)
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return loadLastError("getting hollow brush");
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return NULL;
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}
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void uiFreeInitError(const char *err)
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{
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uiFree((void *) err);
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}
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// TODO consider DisableThreadLibraryCalls() (will require removing ALL C runtime calls)
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// TODO make sure this is the correct name for C runtime initialization (CHECK MSDN OR THE HEADERS)
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// TODO can hinstDLL ever change?
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// TODO handle DLL_PROCESS_DETACH?
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// TODO __declspec(dllexport)?
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BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
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{
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if (fdwReason == DLL_PROCESS_ATTACH)
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hInstance = hinstDLL;
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// TODO provide a cleanup function
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return TRUE;
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}
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