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Re: New issue related to embed a checkbox into table cell

by Feng Feng :: Rate this Message:

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Hello Daniel,

Thank you very much for your code. It works pretty well for me.

However, I have three questions for you

1> Should we call "check->create();" in CheckTableItem::CheckTableItem

Without changing your code, I use the following statement to insert a new cell.
table->setItem(2,1, new CheckTableItem(table, NULL, NULL));
After I run the application, the warning message as follows is shown,

FXCheckButton::create trying to create window before creating parent window

After I comment out the line "check->create();", the code works great

2> Why should we call the following statement in the function onCheck

Target->handle(this, FXSEL(SEL_REPLACED,Selector), &tablerange);

3> The return of the function getCheck may be changed as FXuchar.

Thank you again for your kindness to share your code.
-Feng

From: Daniel Stine <robodanny@...>
To: foxgui-users@...
Sent: Tuesday, June 23, 2009 6:19:17 AM
Subject: [Foxgui-users] New issue related to embed a checkbox into table cell

Feng,

It's funny, but I just recently solved this same problem in an
entirely different way.
I subclassed FXTableItem and embedded a real FXCheckbox in the item.
Works for me.

//---------------------------------------------------------------
//
// Derived checkbox table item
//
//---------------------------------------------------------------
class CheckTableItem : public FXTableItem
{
FXDECLARE(CheckTableItem)

protected:

CheckTableItem() {}

private:

FXTable    *Table;
FXObject    *Target;
FXSelector    Selector;

FXCheckButton *check;

virtual void drawContent(const FXTable* table,FXDC& dc,FXint
x,FXint y,FXint w,FXint h) const;

public:

long onCheck(FXObject *, FXSelector, void *);

enum {
    ID_CHECK = 1,
    ID_LAST
};

public:

CheckTableItem(FXTable *table, FXIcon *ic=NULL, void *ptr=NULL);
virtual ~CheckTableItem(void) { delete check; }

void setCheck(FXbool state=TRUE, FXbool notify=FALSE) {
check->setCheck(state, notify); }
FXbool getCheck() const { return check->getCheck(); }
};

//---------------------------------------------------------------
//    CheckTableItem
//---------------------------------------------------------------
FXDEFMAP(CheckTableItem) CheckTableItemMap[] = {
FXMAPFUNC(SEL_COMMAND, CheckTableItem::ID_CHECK, CheckTableItem::onCheck),
};

FXIMPLEMENT(CheckTableItem, FXTableItem, CheckTableItemMap,
ARRAYNUMBER(CheckTableItemMap))

// Construct new table item
CheckTableItem::CheckTableItem(FXTable *table, FXIcon *ic, void *ptr):
FXTableItem(FXString::null,ic,ptr)
{
Table = table;
Target = table->getTarget();
Selector = table->getSelector();
check = new FXCheckButton(table, FXString::null, this, ID_CHECK);
check->setBackColor(table->getBackColor());
check->create();
}

//
//    drawContent - override
//
void CheckTableItem::drawContent(const FXTable *table, FXDC &dc,
FXint x, FXint y, FXint w, FXint h) const
{
check->position(x+1,y+1,w-2,h-2);
return;
}

//
//    onCheck
//
long CheckTableItem::onCheck(FXObject *, FXSelector, void *vp)
{
if (Target) {
    FXTableRange tablerange;
    tablerange.fm.row = tablerange.to.row = Table->rowAtY(check->getY());
    tablerange.fm.col = tablerange.to.col = Table->colAtX(check->getX());
//fxmessage("[%d,%d] = %p\n", tablerange.fm.row, tablerange.fm.col, vp);
    Target->handle(this, FXSEL(SEL_REPLACED,Selector), &tablerange);
}
return 1;
}

> Date: Mon, 22 Jun 2009 09:20:46 -0700 (PDT)
> From: Feng Feng <askfoxtoolkit@...>
> Subject: [Foxgui-users] New issue related to embed a checkbox into
> table cell
> To: foxgui-users@...
> Message-ID: <711576.78275.qm@...>
> Content-Type: text/plain; charset="us-ascii"
>
> Hello all,
>
> Question part one:
> Based on previous comments & helps, I use the following method to embed a checkbox into table cell.
>

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