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// 7 april 2015
#include "uipriv_windows.h"
struct checkbox {
void (*onToggled)(uiControl *, void *);
void *onToggledData;
};
static BOOL onWM_COMMAND(uiControl *c, WORD code, LRESULT *lResult)
{
struct checkbox *cc = (struct checkbox *) (c->data);
HWND hwnd;
WPARAM check;
if (code != BN_CLICKED)
return FALSE;
// we didn't use BS_AUTOCHECKBOX (see controls_windows.go) so we have to manage the check state ourselves
hwnd = (HWND) uiControlHandle(c);
check = BST_CHECKED;
if (SendMessage(hwnd, BM_GETCHECK, 0, 0) == BST_CHECKED)
check = BST_UNCHECKED;
SendMessage(hwnd, BM_SETCHECK, check, 0);
(*(cc->onToggled))(c, cc->onToggledData);
*lResult = 0;
return TRUE;
}
static BOOL onWM_NOTIFY(uiControl *c, NMHDR *nm, LRESULT *lResult)
{
return FALSE;
}
static void onWM_DESTROY(uiControl *c)
{
struct checkbox *cc = (struct checkbox *) (c->data);
uiFree(cc);
}
// from http://msdn.microsoft.com/en-us/library/windows/desktop/dn742486.aspx#sizingandspacing
#define checkboxHeight 10
// from http://msdn.microsoft.com/en-us/library/windows/desktop/bb226818%28v=vs.85%29.aspx
#define checkboxXFromLeftOfBoxToLeftOfLabel 12
static void preferredSize(uiControl *c, uiSizing *d, intmax_t *width, intmax_t *height)
{
*width = uiDlgUnitsToX(checkboxXFromLeftOfBoxToLeftOfLabel, d->sys->baseX) + uiWindowsWindowTextWidth((HWND) uiControlHandle(c));
*height = uiDlgUnitsToY(checkboxHeight, d->sys->baseY);
}
static void defaultOnToggled(uiControl *c, void *data)
{
// do nothing
}
uiControl *uiNewCheckbox(const char *text)
{
uiControl *c;
struct checkbox *cc;
uiWindowsNewControlParams p;
WCHAR *wtext;
p.dwExStyle = 0;
p.lpClassName = L"button";
wtext = toUTF16(text);
p.lpWindowName = wtext;
p.dwStyle = BS_CHECKBOX | WS_TABSTOP;
p.hInstance = hInstance;
p.useStandardControlFont = TRUE;
p.onWM_COMMAND = onWM_COMMAND;
p.onWM_NOTIFY = onWM_NOTIFY;
p.onWM_DESTROY = onWM_DESTROY;
c = uiWindowsNewControl(&p);
uiFree(wtext);
c->preferredSize = preferredSize;
cc = uiNew(struct checkbox);
cc->onToggled = defaultOnToggled;
c->data = cc;
return c;
}
char *uiCheckboxText(uiControl *c)
{
return uiWindowsControlText(c);
}
void uiCheckboxSetText(uiControl *c, const char *text)
{
uiWindowsControlSetText(c, text);
}
void uiCheckboxOnToggled(uiControl *c, void (*f)(uiControl *, void *), void *data)
{
struct checkbox *cc = (struct checkbox *) (c->data);
cc->onToggled = f;
cc->onToggledData = data;
}
int uiCheckboxChecked(uiControl *c)
{
HWND hwnd;
hwnd = (HWND) uiControlHandle(c);
return SendMessage(hwnd, BM_GETCHECK, 0, 0) == BST_CHECKED;
}
void uiCheckboxSetChecked(uiControl *c, int checked)
{
HWND hwnd;
WPARAM check;
hwnd = (HWND) uiControlHandle(c);
check = BST_CHECKED;
if (!checked)
check = BST_UNCHECKED;
SendMessage(hwnd, BM_SETCHECK, check, 0);
}
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