libui/windows/main.cpp

153 lines
4.2 KiB
C++

// 6 april 2015
#include "uipriv_windows.hpp"
HINSTANCE uipriv_hInstance = NULL;
int uipriv_nCmdShow;
#ifndef uiStatic
BOOL WINAPI DllMain(HINSTANCE hInstance, DWORD fdwReason, LPVOID lpvReserved)
{
if (fdwReason == DLL_PROCESS_ATTACH)
uipriv_hInstance = hInstance;
return TRUE;
}
static inline void setHInstance(void)
{
// do nothing; set by DllMain() above
}
#else
// see https://devblogs.microsoft.com/oldnewthing/20041025-00/?p=37483
EXTERN_C IMAGE_DOS_HEADER __ImageBase;
static inline void setHInstance(void)
{
uipriv_hInstance = (HINSTANCE) (&__ImageBase);
}
#endif
//HFONT hMessageFont;
#define wantedICCClasses ( \
ICC_STANDARD_CLASSES | /* user32.dll controls */ \
ICC_PROGRESS_CLASS | /* progress bars */ \
ICC_TAB_CLASSES | /* tabs */ \
ICC_LISTVIEW_CLASSES | /* table headers */ \
ICC_UPDOWN_CLASS | /* spinboxes */ \
ICC_BAR_CLASSES | /* trackbar */ \
ICC_DATE_CLASSES | /* date/time picker */ \
0)
// TODO add format string warning detection to all these functions, where available
#define uiprivInitReturnHRESULT(err, msg, hr) uiprivInitReturnErrorf(err, "%s: 0x%08I32X", msg, hr)
static DWORD mainThread;
bool uiprivSysInit(void *options, uiInitError *err)
{
STARTUPINFOW si;
HICON hDefaultIcon;
HCURSOR hDefaultCursor;
INITCOMMONCONTROLSEX icc;
HRESULT hr;
setHInstance();
uipriv_nCmdShow = SW_SHOWDEFAULT;
GetStartupInfoW(&si);
if ((si.dwFlags & STARTF_USESHOWWINDOW) != 0)
uipriv_nCmdShow = si.wShowWindow;
hr = uiprivHrLoadIconW(NULL, IDI_APPLICATION, &hDefaultIcon);
if (hr != S_OK)
return uiprivInitReturnHRESULT(err, "failed to load default icon", hr);
hr = uiprivHrLoadCursorW(NULL, IDC_ARROW, &hDefaultCursor);
if (hr != S_OK)
return uiprivInitReturnHRESULT(err, "failed to load default cursor", hr);
hr = uiprivInitUtilWindow(hDefaultIcon, hDefaultCursor);
if (hr != S_OK)
return uiprivInitReturnHRESULT(err, "failed to initialize the utility window", hr);
ZeroMemory(&icc, sizeof (INITCOMMONCONTROLSEX));
icc.dwSize = sizeof (INITCOMMONCONTROLSEX);
icc.dwICC = wantedICCClasses;
if (InitCommonControlsEx(&icc) == 0) {
DWORD lasterr;
lasterr = GetLastError();
if (lasterr == 0)
return uiprivInitReturnErrorf(err, "InitCommonControlsEx() failed, but didn't specify why. This usually means you forgot the Common Controls v6 manifest; refer to the libui documentation for instructions.");
hr = HRESULT_FROM_WIN32(lasterr);
return uiprivInitReturnHRESULT(err, "InitCommonControlsEx() failed", hr);
}
/* hr = CoInitialize(NULL);
if (hr != S_OK && hr != S_FALSE)
return uiprivInitReturnHRESULT(err, "CoInitialize() failed", hr);
// TODO initialize COM security
// TODO turn off COM exception handling
*/
mainThread = GetCurrentThreadId();
return true;
}
void uiMain(void)
{
MSG msg;
HRESULT hr;
if (!uiprivCheckInitializedAndThread())
return;
for (;;) {
hr = uiprivHrGetMessageW(&msg, NULL, 0, 0);
if (hr == S_FALSE) // WM_QUIT
return;
if (hr != S_OK)
uiprivInternalError("GetMessageW() failed in uiMain(): 0x%08I32X", hr);
// TODO IsDialogMessage()
TranslateMessage(&msg);
DispatchMessageW(&msg);
}
}
void uiQuit(void)
{
if (!uiprivCheckInitializedAndThread())
return;
PostQuitMessage(0);
}
void uiprivSysQueueMain(void (*f)(void *data), void *data)
{
HRESULT hr;
hr = uiprivHrPostMessageW(uiprivUtilWindow, uiprivUtilWindowMsgQueueMain, (WPARAM) f, (LPARAM) data);
if (hr != S_OK)
uiprivInternalError("PostMessageW() failed in uiQueueMain(): 0x%08I32X", hr);
}
bool uiprivSysCheckThread(void)
{
return GetCurrentThreadId() == mainThread;
}
void uiprivReportError(const char *prefix, const char *msg, const char *suffix, bool internal)
{
// Print to both stderr and the debugger; the former handles the case of a console and the latter handles the case of not.
// TODO find a reliable way to check if stderr is connected (the mere presence of a console window is not one)
fprintf(stderr, "*** %s: %s. %s\n", prefix, msg, suffix);
// Use OutputDebugStringA() directly because these *are* runtime MBCS strings.
OutputDebugStringA(prefix);
OutputDebugStringA(": ");
OutputDebugStringA(msg);
OutputDebugStringA(". ");
OutputDebugStringA(suffix);
OutputDebugStringA("\n");
DebugBreak();
abort(); // we shouldn't reach here
}