libui/windows/init.c

121 lines
3.1 KiB
C
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// 6 april 2015
#include "uipriv_windows.h"
HINSTANCE hInstance;
int nCmdShow;
HFONT hMessageFont;
HBRUSH hollowBrush;
struct uiInitError {
char *msg;
char failbuf[256];
};
#define initErrorFormat L"error %s: %s%sGetLastError() == %I32u%s"
#define initErrorArgs wmessage, sysmsg, beforele, le, afterle
static const char *loadLastError(const char *message)
{
WCHAR *sysmsg;
BOOL hassysmsg;
WCHAR *beforele;
WCHAR *afterle;
int n;
WCHAR *wmessage;
WCHAR *wstr;
const char *str;
DWORD le;
le = GetLastError();
if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, NULL, le, 0, (LPWSTR) (&sysmsg), 0, NULL) != 0) {
hassysmsg = TRUE;
beforele = L" (";
afterle = L")";
} else {
hassysmsg = FALSE;
sysmsg = L"";
beforele = L"";
afterle = L"";
}
wmessage = toUTF16(message);
n = _scwprintf(initErrorFormat, initErrorArgs);
wstr = (WCHAR *) uiAlloc((n + 1) * sizeof (WCHAR), "WCHAR[]");
snwprintf(wstr, n + 1, initErrorFormat, initErrorArgs);
str = toUTF8(wstr);
uiFree(wstr);
if (hassysmsg)
if (LocalFree(sysmsg) != NULL)
logLastError("error freeing system message in loadLastError()");
uiFree(wmessage);
return str;
}
uiInitOptions options;
const char *uiInit(uiInitOptions *o)
{
STARTUPINFOW si;
const char *ce;
HICON hDefaultIcon;
HCURSOR hDefaultCursor;
NONCLIENTMETRICSW ncm;
options = *o;
if (initAlloc() == 0)
return loadLastError("error initializing memory allocations");
nCmdShow = SW_SHOWDEFAULT;
GetStartupInfoW(&si);
if ((si.dwFlags & STARTF_USESHOWWINDOW) != 0)
nCmdShow = si.wShowWindow;
ce = initCommonControls();
if (ce != NULL)
return loadLastError(ce);
hDefaultIcon = LoadIconW(NULL, IDI_APPLICATION);
if (hDefaultIcon == NULL)
return loadLastError("loading default icon for window classes");
hDefaultCursor = LoadCursorW(NULL, IDC_ARROW);
if (hDefaultCursor == NULL)
return loadLastError("loading default cursor for window classes");
if (registerWindowClass(hDefaultIcon, hDefaultCursor) == 0)
return loadLastError("registering uiWindow window class");
ZeroMemory(&ncm, sizeof (NONCLIENTMETRICSW));
ncm.cbSize = sizeof (NONCLIENTMETRICSW);
if (SystemParametersInfoW(SPI_GETNONCLIENTMETRICS, sizeof (NONCLIENTMETRICSW), &ncm, sizeof (NONCLIENTMETRICSW)) == 0)
return loadLastError("getting default fonts");
hMessageFont = CreateFontIndirectW(&(ncm.lfMessageFont));
if (hMessageFont == NULL)
return loadLastError("loading default messagebox font; this is the default UI font");
ce = initContainer(hDefaultIcon, hDefaultCursor);
if (ce != NULL)
return loadLastError(ce);
hollowBrush = (HBRUSH) GetStockObject(HOLLOW_BRUSH);
if (hollowBrush == NULL)
return loadLastError("getting hollow brush");
return NULL;
}
void uiFreeInitError(const char *err)
{
uiFree((void *) err);
}
2015-05-01 09:19:44 -05:00
// TODO consider DisableThreadLibraryCalls() (will require removing ALL C runtime calls)
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
{
if (fdwReason == DLL_PROCESS_ATTACH)
hInstance = hinstDLL;
// TODO provide a cleanup function
return TRUE;
}