114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
// 20 may 2015
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#include "uipriv_windows.h"
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// TODO
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// - is there extra space on the bottom?
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// we as Common Controls 6 users don't need to worry about the height of comboboxes; see http://blogs.msdn.com/b/oldnewthing/archive/2006/03/10/548537.aspx
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struct uiCombobox {
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uiWindowsControl c;
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HWND hwnd;
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void (*onSelected)(uiCombobox *, void *);
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void *onSelectedData;
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};
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uiWindowsDefineControlWithOnDestroy(
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uiCombobox, // type name
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uiComboboxType, // type function
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uiWindowsUnregisterWM_COMMANDHandler(this->hwnd); // on destroy
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)
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// note: NOT triggered on entering text
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static BOOL onWM_COMMAND(uiControl *cc, HWND hwnd, WORD code, LRESULT *lResult)
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{
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uiCombobox *c = uiCombobox(cc);
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if (code != CBN_SELCHANGE)
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return FALSE;
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(*(c->onSelected))(c, c->onSelectedData);
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*lResult = 0;
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return TRUE;
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}
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// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
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#define comboboxWidth 107 /* this is actually the shorter progress bar width, but Microsoft only indicates as wide as necessary */
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#define comboboxHeight 14
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static void minimumSize(uiWindowsControl *c, uiWindowsSizing *d, intmax_t *width, intmax_t *height)
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{
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*width = uiWindowsDlgUnitsToX(comboboxWidth, d->BaseX);
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*height = uiWindowsDlgUnitsToY(comboboxHeight, d->BaseY);
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}
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static void defaultOnSelected(uiCombobox *c, void *data)
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{
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// do nothing
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}
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void uiComboboxAppend(uiCombobox *c, const char *text)
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{
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WCHAR *wtext;
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LRESULT res;
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wtext = toUTF16(text);
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res = SendMessageW(c->hwnd, CB_ADDSTRING, 0, (LPARAM) wtext);
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if (res == (LRESULT) CB_ERR)
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logLastError("error appending item to uiCombobox");
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else if (res == (LRESULT) CB_ERRSPACE)
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logLastError("memory exhausted appending item to uiCombobox");
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uiFree(wtext);
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}
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intmax_t uiComboboxSelected(uiCombobox *c)
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{
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LRESULT n;
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n = SendMessage(c->hwnd, CB_GETCURSEL, 0, 0);
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if (n == (LRESULT) CB_ERR)
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return -1;
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return (intmax_t) n;
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}
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void uiComboboxSetSelected(uiCombobox *c, intmax_t n)
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{
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// TODO error check
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SendMessageW(c->hwnd, CB_SETCURSEL, (WPARAM) n, 0);
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}
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void uiComboboxOnSelected(uiCombobox *c, void (*f)(uiCombobox *c, void *data), void *data)
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{
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c->onSelected = f;
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c->onSelectedData = data;
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}
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static uiCombobox *finishNewCombobox(DWORD style)
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{
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uiCombobox *c;
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c = (uiCombobox *) uiNewControl(uiComboboxType());
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c->hwnd = uiWindowsEnsureCreateControlHWND(WS_EX_CLIENTEDGE,
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L"combobox", L"",
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style | WS_TABSTOP,
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hInstance, NULL,
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TRUE);
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uiWindowsRegisterWM_COMMANDHandler(c->hwnd, onWM_COMMAND, uiControl(c));
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uiComboboxOnSelected(c, defaultOnSelected, NULL);
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uiWindowsFinishNewControl(c, uiCombobox);
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return c;
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}
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uiCombobox *uiNewCombobox(void)
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{
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return finishNewCombobox(CBS_DROPDOWNLIST);
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}
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uiCombobox *uiNewEditableCombobox(void)
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{
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return finishNewCombobox(CBS_DROPDOWN);
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}
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