libui/redo/windows/combobox.c

68 lines
1.7 KiB
C

// 20 may 2015
#include "uipriv_windows.h"
// TODO point to where it says size is autocomputed on comctl6
struct combobox {
uiCombobox c;
HWND hwnd;
};
uiDefineControlType(uiCombobox, uiTypeCombobox, struct combobox)
// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define comboboxWidth 107 /* this is actually the shorter progress bar width, but Microsoft only indicates as wide as necessary */
#define comboboxHeight 14
static void comboboxPreferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
{
*width = uiWindowsDlgUnitsToX(comboboxWidth, d->Sys->BaseX);
*height = uiWindowsDlgUnitsToY(comboboxHeight, d->Sys->BaseY);
}
static void comboboxAppend(uiCombobox *cc, const char *text)
{
struct combobox *c = (struct combobox *) cc;
WCHAR *wtext;
LRESULT res;
wtext = toUTF16(text);
res = SendMessageW(c->hwnd, CB_ADDSTRING, 0, (LPARAM) wtext);
if (res == (LRESULT) CB_ERR)
logLastError("error appending item to uiCombobox");
else if (res == (LRESULT) CB_ERRSPACE)
logLastError("memory exhausted appending item to uiCombobox");
uiFree(wtext);
}
static uiCombobox *finishNewCombobox(DWORD style)
{
struct combobox *c;
uiWindowsMakeControlParams p;
c = (struct combobox *) uiWindowsNewSingleHWNDControl(uiTypeCombobox());
// TODO client edge?
c->hwnd = uiWindowsUtilCreateControlHWND(WS_EX_CLIENTEDGE,
L"combobox", L"",
style | WS_TABSTOP,
hInstance, NULL,
TRUE);
uiControl(c)->PreferredSize = comboboxPreferredSize;
uiCombobox(c)->Append = comboboxAppend;
return uiCombobox(c);
}
uiCombobox *uiNewCombobox(void)
{
return finishNewCombobox(CBS_DROPDOWNLIST);
}
uiCombobox *uiNewEditableCombobox(void)
{
return finishNewCombobox(CBS_DROPDOWN);
}