c - How do I get TTM_POPUP to not fade out instantly and then come back? -

i've decided th easiest way handle tooltips in table control handle initial delay myself, create tooltip dynamically, , destroy when it's not needed anymore. problem when use ttm_popup show tooltip, fades out instantly , comes again time later. i'd rather have fade in , stay there once.

my hypothesis tooltip handling tooltip delay itself, , fading existing tip out , in. i'm not sure that. should set delay time 0 , expect work (without worrying ttm_popup @ all)? or there better way? or wrong?

the program below demonstrates what's going on. hover mouse on window , should see it.

tested on windows xp , windows 7. strictly common controls 6.

edit okay, tried adding ttm_setdelaytime set initial time 0 (not reflected in program below). didn't work. if keep ttm_popup afterward, fades out faster usual (which proves hypothesis, maybe). if remove ttm_popup, doesn't show until move mouse anyway. there else can tooltip pop up?

thanks!

// 5 april 2015 // based on wintooltipsubclasstest.c 31 march-2 april 2015 #define unicode #define _unicode #define strict #define strict_typed_itemids #define cinterface // windows version right; right windows xp #define winver 0x0501 #define _win32_winnt 0x0501 #define _win32_windows 0x0501       /* according microsoft's winperf.h */ #define _win32_ie 0x0600            /* according microsoft's sdkddkver.h */ #define ntddi_version 0x05010000    /* according microsoft's sdkddkver.h */ #include <windows.h> #include <commctrl.h> #include <windowsx.h> #include <stdio.h> #include <stdlib.h>  void die(char *why) {     fprintf(stderr, "error %s: %i32u\n", why, getlasterror());     abort(); }  hwnd tooltip = null; hinstance hinstance;  void maketooltip(hwnd hwnd) {     toolinfow ti;      tooltip = createwindowexw(ws_ex_toolwindow,         tooltips_classw, l"",         ws_popup | tts_noprefix,         0, 0,         0, 0,         hwnd, null, hinstance, null);     if (tooltip == null)         die("creating tooltip");      zeromemory(&ti, sizeof (toolinfow));     ti.cbsize = tttoolinfow_v2_size;     ti.uflags = ttf_idishwnd | ttf_subclass | ttf_transparent;     ti.hwnd = hwnd;     ti.uid = (uint_ptr) hwnd;     ti.hinst = hinstance;     ti.lpsztext = l"this tooltip! wow!";     if (sendmessagew(tooltip, ttm_addtool, 0, (lparam) (&ti)) == false)         die("setting tooltip"); }  lparam last = 0;  lresult callback wndproc(hwnd hwnd, uint umsg, wparam wparam, lparam lparam) {     switch (umsg) {     case wm_close:         postquitmessage(0);         break;     case wm_mousemove:         // cheap way of testing hovers         if (lparam != last)             settimer(hwnd, 1, getdoubleclicktime(), null);         last = lparam;         break;     case wm_timer:         if (wparam != 1)             break;         killtimer(hwnd, 1);         maketooltip(hwnd);         sendmessage(tooltip, ttm_popup, 0, 0);         return 0;     }     return defwindowproc(hwnd, umsg, wparam, lparam); }  void initcommoncontrols(bool);  int main(int argc, char *argv[]) {     bool comctl5;     wndclassw wc;     hwnd mainwin;     msg msg;      hinstance = getmodulehandle(null);      comctl5 = false;     if (argc > 1)         comctl5 = strcmp(argv[1], "comctl5") == 0;     initcommoncontrols(comctl5);      zeromemory(&wc, sizeof (wndclassw));     wc.lpszclassname = l"mainwin";     wc.lpfnwndproc = wndproc;     wc.hicon = loadiconw(null, idi_application);     wc.hcursor = loadcursorw(null, idc_arrow);     wc.hbrbackground = (hbrush) (color_btnface + 1);     wc.hinstance = getmodulehandle(null);     if (registerclassw(&wc) == 0)         die("registering main window class");      mainwin = createwindowexw(0,         l"mainwin", l"main window",         ws_overlappedwindow,         cw_usedefault, cw_usedefault,         cw_usedefault, cw_usedefault,         null, null, getmodulehandle(null), null);     if (mainwin == null)         die("creating main window");      showwindow(mainwin, sw_showdefault);     updatewindow(mainwin);      while (getmessage(&msg, null, 0, 0) > 0) {         translatemessage(&msg);         dispatchmessage(&msg);     }     return 0; }  // msdn doesn't list constant includes tooltips says , few others #define wantediccclasses (icc_bar_classes)  static ulong_ptr comctlmanifestcookie; static hmodule comctl32;  // note 8-bit character string we're writing; see encoding clause static const char manifest[] = "<?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"yes\"?>\n<assembly xmlns=\"urn:schemas-microsoft-com:asm.v1\" manifestversion=\"1.0\">\n<assemblyidentity\n    version=\"1.0.0.0\"\n    processorarchitecture=\"*\"\n    name=\"companyname.productname.yourapplication\"\n    type=\"win32\"\n/>\n<description>your application description here.</description>\n<dependency>\n    <dependentassembly>\n        <assemblyidentity\n            type=\"win32\"\n            name=\"microsoft.windows.common-controls\"\n            version=\"6.0.0.0\"\n            processorarchitecture=\"*\"\n            publickeytoken=\"6595b64144ccf1df\"\n            language=\"*\"\n        />\n    </dependentassembly>\n</dependency>\n</assembly>\n";  void initcommoncontrols(bool comctl5) {     wchar temppath[max_path + 1];     wchar filename[max_path + 1];     handle file;     dword nexpected, ngot;     actctx actctx;     handle ac;     initcommoncontrolsex icc;     farproc f;     // listed winapi in both microsoft's , mingw's headers, not on msdn reason     bool (*winapi ficc)(const lpinitcommoncontrolsex);      if (!comctl5) {         if (gettemppathw(max_path + 1, temppath) == 0)             die("getting temporary path writing manifest file");         if (gettempfilenamew(temppath, l"manifest", 0, filename) == 0)             die("getting temporary filename writing manifest file");         file = createfilew(filename, generic_write,             0,          // don't share while writing             null, create_always, file_attribute_normal, null);         if (file == null)             die("creating manifest file");         nexpected = (sizeof manifest / sizeof manifest[0]) - 1;     // - 1 omit terminating null character)         if (writefile(file, manifest, nexpected, &ngot, null) == 0)             die("writing manifest file");         if (ngot != nexpected)             die("short write manifest file");         if (closehandle(file) == 0)             die("closing manifest file (this error here because not doing prevent windows being able use manifest file in activation context)");          zeromemory(&actctx, sizeof (actctx));         actctx.cbsize = sizeof (actctx);         actctx.dwflags = actctx_flag_set_process_default;         actctx.lpsource = filename;         ac = createactctx(&actctx);         if (ac == invalid_handle_value)             die("creating activation context synthesized manifest file");         if (activateactctx(ac, &comctlmanifestcookie) == false)             die("activating activation context synthesized manifest file");     }      zeromemory(&icc, sizeof (initcommoncontrolsex));     icc.dwsize = sizeof (initcommoncontrolsex);     icc.dwicc = wantediccclasses;      comctl32 = loadlibraryw(l"comctl32.dll");     if (comctl32 == null)         die("loading comctl32.dll");     f = getprocaddress(comctl32, "initcommoncontrolsex");     if (f == null)         die("loading initcommoncontrolsex()");     ficc = (bool (*winapi)(const lpinitcommoncontrolsex)) f;     if ((*ficc)(&icc) == false)         die("initializing common controls (comctl32.dll)"); }