why it's paint not work? Topic is solved

[wunekky]

MouseEvent:

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void CalculateDlg::OnMouse(wxMouseEvent &event)
{
	wxPoint pt(event.GetPosition());
	if((pt.x>0)&&(pt.x<68)&&(pt.y>165)&&(pt.y<165+60)&&(event.LeftDown()))
	{
		ButtonSel = num1;

	}
	if(event.LeftDown())
		ButtonSel = num1;

}

paint:

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    if(ButtonSel==num1)
	{
		wxBufferedPaintDC mydc(this);
		mydc.SetPen(*wxBLACK_PEN);
		mydc.SetBrush(wxColour(255,155,0)/**wxRED_BRUSH*/);
		DrawTextString(mydc,wxT("test"),wxPoint(50,50) );
	}

why "test" cann't paint in dialog?

[van_user]

Try to call "Invalidate" or "Refresh" methods. Also for test set if statement to "true".

[wunekky]

thinks,then like this:
MouseEvent:

Code: Select all

void CalculateDlg::OnMouse(wxMouseEvent &event)
{
	wxPoint pt(event.GetPosition());
	if(event.LeftDown())
		ButtonSel = 1;

}

Paint:

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    if(ButtonSel==1)
	{
		wxBufferedPaintDC mydc(this);
		wxFont font(30,wxFONTFAMILY_SCRIPT  ,wxNORMAL,wxBOLD);
		mydc.SetFont(font);
		mydc.SetTextForeground(*wxRED);
		mydc.DrawText(wxT("test"),wxPoint(50,50));
	}

if the segment set 1,it can paint,so why the segment not equ 1?

[van_user]

Do you hit left button on the mouse?
Do you clear "ButtonSel" when not event.LeftDown()?
"LeftDown - Returns true if the left mouse button changed to down." Maybe if button state is already down then method return false?

[wunekky]

Do you hit left button on the mouse?
of course.

Do you clear "ButtonSel" when not event.LeftDown()?
the ButtonSel is a global variable ,just used in this place.

"LeftDown - Returns true if the left mouse button changed to down." Maybe if button state is already down then method return false?
if button state is already down,the ButtonSel will be set to 1,then it will keep 1.
Mouse up,the if segment will be false ,but the ButtonSel's value still is 1.why it cann't paint?

[van_user]

if button state is already down,the ButtonSel will be set to 1,then it will keep 1.
Mouse up,the if segment will be false ,but the ButtonSel's value still is 1.why it cann't paint?

I have only 2 versions:
1 - ButtonSel never set to 1
2 - ButtonSel somewhere set to not 1.
Without code I can`t say more.
Try debugger - stop on

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if(event.LeftDown())

and inspect value of ButtonSel or output message with its value using cout/printf or MessageBox.

[wunekky]

debugger:the value if ButtonSel set to 1.
just like the string will be paint,but then it will be cover with something.

[van_user]

just like the string will be paint,but then it will be cover with something.

I don`t think so: you said that if statement of

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if(ButtonSel==1)
        { wxBufferedPaintDC mydc(this);
               ...
          mydc.DrawText(wxT("test"),wxPoint(50,50));}

set to true programme work well - why something don`t cover your text in that case? But maybe I am wrong. Need code to test.

[wunekky]

add Refresh,it work on.

Code: Select all

void CalculateDlg::OnMouse(wxMouseEvent &event) 
{ 
        wxPoint pt(event.GetPosition()); 
        if(event.LeftDown()) 
        {
                ButtonSel = 1; 
                Refresh();
        }

}

but when the mouse down,i have a flicker.

[van_user]

but when the mouse down,i have a flicker.

Try this:

Code: Select all

void CalculateDlg::OnMouse(wxMouseEvent &event) 
{ 
        wxPoint pt(event.GetPosition()); 
        if( ButtonSel != 1 && event.LeftDown()) 
        {
                ButtonSel = 1; 
                Refresh();
        }

}

[wunekky]

maybe casuse of PNG image...