87 lines
2.6 KiB
C
87 lines
2.6 KiB
C
// 20 may 2015
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#include "uipriv_windows.h"
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// In each of these structures, hwnd is the hash key.
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struct commandHandler {
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HWND hwnd;
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BOOL (*handler)(uiControl *, HWND, WORD, LRESULT *);
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uiControl *c;
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UT_hash_handle hh;
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};
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struct notifyHandler {
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HWND hwnd;
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BOOL (*handler)(uiControl *, HWND, NMHDR *, LRESULT *);
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uiControl *c;
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UT_hash_handle hh;
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};
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struct hscrollHandler {
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HWND hwnd;
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BOOL (*handler)(uiControl *, HWND, WORD, LRESULT *);
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uiControl *c;
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UT_hash_handle hh;
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};
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struct commandHandler *commandHandlers = NULL;
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struct notifyHandler *notifyHandlers = NULL;
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struct hscrollHandler *hscrollHandlers = NULL;
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#define REGFN(WM_MESSAGE, message, params) \
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void uiWindowsRegister ## WM_MESSAGE ## Handler(HWND hwnd, BOOL (*handler)params, uiControl *c) \
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{ \
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struct message ## Handler *ch; \
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HASH_FIND_PTR(message ## Handlers, &hwnd, ch); \
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if (ch != NULL) \
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complain("window handle %p already subscribed with a %s handler in uiWindowsRegister%sHandler()", hwnd, #WM_MESSAGE, #WM_MESSAGE); \
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ch = uiNew(struct message ## Handler); \
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ch->hwnd = hwnd; \
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ch->handler = handler; \
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ch->c = c; \
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HASH_ADD_PTR(message ## Handlers, hwnd, ch); \
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}
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REGFN(WM_COMMAND, command, (uiControl *, HWND, WORD, LRESULT *))
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REGFN(WM_NOTIFY, notify, (uiControl *, HWND, NMHDR *, LRESULT *))
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REGFN(WM_HSCROLL, hscroll, (uiControl *, HWND, WORD, LRESULT *))
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#define UNREGFN(WM_MESSAGE, message) \
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void uiWindowsUnregister ## WM_MESSAGE ## Handler(HWND hwnd) \
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{ \
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struct message ## Handler *ch; \
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HASH_FIND_PTR(message ## Handlers, &hwnd, ch); \
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if (ch == NULL) \
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complain("window handle %p not registered with a %s handler in uiWindowsUnregister%sHandler()", hwnd, #WM_MESSAGE, #WM_MESSAGE); \
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HASH_DEL(message ## Handlers, ch); \
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uiFree(ch); \
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}
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UNREGFN(WM_COMMAND, command)
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UNREGFN(WM_NOTIFY, notify)
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UNREGFN(WM_HSCROLL, hscroll)
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#define RUNFN(WM_MESSAGE, message, gethwnd, arg3) \
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BOOL run ## WM_MESSAGE(WPARAM wParam, LPARAM lParam, LRESULT *lResult) \
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{ \
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HWND control; \
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struct message ## Handler *ch;\
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/* bounce back to the control in question */ \
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/* don't bounce back if to the utility window, in which case act as if the message was ignored */ \
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control = gethwnd; \
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if (control != NULL && IsChild(utilWindow, control) == 0) { \
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HASH_FIND_PTR(message ## Handlers, &control, ch); \
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if (ch != NULL) \
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return (*(ch->handler))(ch->c, control, arg3, lResult); \
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/* not registered; fall out to return FALSE */ \
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} \
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return FALSE; \
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}
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RUNFN(WM_COMMAND, command,
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(HWND) lParam,
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HIWORD(wParam))
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RUNFN(WM_NOTIFY, notify,
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((NMHDR *) lParam)->hwndFrom,
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((NMHDR *) lParam))
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RUNFN(WM_HSCROLL, hscroll,
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(HWND) lParam,
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LOWORD(wParam))
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