104 lines
2.4 KiB
C
104 lines
2.4 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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HWND initialParent;
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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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static void loadLastError(uiInitError *err, const char *message)
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{
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DWORD le;
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le = GetLastError();
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// TODO FormatMessageW() it
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_snprintf_s(err->failbuf, 256, _TRUNCATE, "error %s (last error %I32u)", message, le);
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err->msg = err->failbuf;
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}
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uiInitError *uiInit(uiInitOptions *o)
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{
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uiInitError *err;
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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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err = (uiInitError *) uiAlloc(sizeof (uiInitError));
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hInstance = GetModuleHandle(NULL);
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if (hInstance == NULL) {
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loadLastError(err, "getting program HINSTANCE");
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return err;
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}
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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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// TODO add "in initCommonControls()" to each of the messages this returns
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// TODO make loadLastError() return err directly
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ce = initCommonControls();
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if (ce != NULL) {
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loadLastError(err, ce);
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return err;
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}
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hDefaultIcon = LoadIconW(NULL, IDI_APPLICATION);
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if (hDefaultIcon == NULL) {
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loadLastError(err, "loading default icon for window classes");
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return err;
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}
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hDefaultCursor = LoadCursorW(NULL, IDC_ARROW);
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if (hDefaultCursor == NULL) {
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loadLastError(err, "loading default cursor for window classes");
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return err;
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}
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if (registerWindowClass(hDefaultIcon, hDefaultCursor) == 0) {
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loadLastError(err, "registering uiWindow window class");
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return err;
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}
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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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loadLastError(err, "getting default fonts");
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return err;
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}
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hMessageFont = CreateFontIndirectW(&(ncm.lfMessageFont));
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if (hMessageFont == NULL) {
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loadLastError(err, "loading default messagebox font; this is the default UI font");
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return err;
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}
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// give each control a reasonable initial parent
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// don't free the initial parent!
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// TODO tune this better; it shouldn't be closed, for instance
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initialParent = uiWindowHandle(uiNewWindow("", 0, 0));
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uiFree(err);
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return NULL;
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}
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const char *uiInitErrorMessage(uiInitError *err)
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{
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return err->msg;
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}
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void uiInitErrorFree(uiInitError *err)
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{
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if (err->msg != err->failbuf)
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uiFree(err->msg);
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uiFree(err);
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}
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