Programming Forums > Application Development > C++

-=PARADOX=- · Nov 13th, 2005, 5:10 PM

Hi there...

How can I drag a form that doesn't have a titlebar?

Brent · Nov 13th, 2005, 5:22 PM

what OS and compiler are you using. could you give me info about what your trying to do

-=PARADOX=- · Nov 13th, 2005, 5:27 PM

Using XP, with C++ Builder.

-=PARADOX=- · Nov 13th, 2005, 5:53 PM

I planning to do a window that is basicaly an image... so it'll not have the titlebar, and i want to make it move if i press the left button of the mouse and drag it.

ivan · Nov 14th, 2005, 4:14 AM

you must code it by yourself... nobody will do it for you.

Ooble · Nov 14th, 2005, 3:15 PM

Quote:

Originally Posted by ivan

you must code it by yourself... nobody will do it for you.

What the heck has happened to this forum? I don't see him asking for you to code it anywhere... just for some help.

Paradox: you'll need to capture the WM_MOUSEDOWN, WM_MOUSEMOVE and WM_MOUSEUP events, and then find out how far the mouse moves by, well... I can't quite remember, but I'm pretty sure it was easy enough

. Anyway, basically, what you do is set a flag to true in WM_MOUSEDOWN and false in WM_MOUSEUP, and then measure the distance travelled and use some weird function to move the window. I can't quite remember much beyond that, having abandoned Windows C++ programming in favour of C#, but Google should get you the rest of the way.

-=PARADOX=- · Nov 14th, 2005, 4:34 PM

This is how my code looks right now:

(Toggle Plain Text)

void __fastcall TForm1::BackgroundMouseMove(TObject *Sender,
      TShiftState Shift, int X, int Y)
{
        if ( Shift.Contains(ssLeft) ) // this tests if we are pressing the left button of the mouse
       {   
               Form1->Left = Mouse->CursorPos.x;
               Form1->Top = Mouse->CursorPos.y;
        }
}

This works... but not very well...
How do I calculate the distance travelled?

Thanks

Nov 13th, 2005, 5:10 PM	#1
-=PARADOX=- Programmer Join Date: Oct 2005 Location: Portugal Posts: 53 Rep Power: 3	Moving Form Hi there... How can I drag a form that doesn't have a titlebar?

Nov 14th, 2005, 4:34 PM	#7
-=PARADOX=- Programmer Join Date: Oct 2005 Location: Portugal Posts: 53 Rep Power: 3	This is how my code looks right now: (Toggle Plain Text) void __fastcall TForm1::BackgroundMouseMove(TObject Sender, TShiftState Shift, int X, int Y) { if ( Shift.Contains(ssLeft) ) // this tests if we are pressing the left button of the mouse { Form1->Left = Mouse->CursorPos.x; Form1->Top = Mouse->CursorPos.y; } } void __fastcall TForm1::BackgroundMouseMove(TObject Sender, TShiftState Shift, int X, int Y) { if ( Shift.Contains(ssLeft) ) // this tests if we are pressing the left button of the mouse { Form1->Left = Mouse->CursorPos.x; Form1->Top = Mouse->CursorPos.y; } } This works... but not very well... How do I calculate the distance travelled? Thanks

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Nov 13th, 2005, 5:22 PM	#2
Brent Highly Adaptive Penguin Join Date: May 2005 Location: United States Posts: 249 Rep Power: 4	what OS and compiler are you using. could you give me info about what your trying to do

Nov 13th, 2005, 5:27 PM	#3
-=PARADOX=- Programmer Join Date: Oct 2005 Location: Portugal Posts: 53 Rep Power: 3	Using XP, with C++ Builder.

Nov 13th, 2005, 5:53 PM	#4
-=PARADOX=- Programmer Join Date: Oct 2005 Location: Portugal Posts: 53 Rep Power: 3	I planning to do a window that is basicaly an image... so it'll not have the titlebar, and i want to make it move if i press the left button of the mouse and drag it.

Nov 14th, 2005, 4:14 AM	#5
ivan Professional Programmer Join Date: Sep 2005 Location: serbia & montenegro Posts: 484 Rep Power: 3	you must code it by yourself... nobody will do it for you.

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Programming Forums > Application Development > C++

Moving Form