Borderless Window

[Wak]

How do I make a borderless window. I am just passing values to the style part 'dwStyle' of the CreateWindow function. So far I have WS_OVERLAPPEDWINDOW. What else should I add to make the window Borderless?

[Wak]

Ok, I got the borderless window. I used WS_POPUP for anyone that wanted to know. But how can I move my window around now that it has no title bar??

[abdul]

Use this when you recieve the WM_MOUSEMOVE message:

RleaseCapture();
SendMessage(hwnd, WM_NCLBUTTONDOWN, HTCAPTION);
return 0;

[Wak]

Thanx.
2 things though.
How does this work.
And also, how can I make it so I actually have to click on the window to trigger the free movement of the window, and not just anywhere inside windows??

[unformed]

this should work:
when you receive WM_NCHITTEST, return HTCAPTION

case WM_NCHITTEST:
	return HTCAPTION;

[Brandito]

This is what I would do... although I know practically nothing about graphical c++ programming.

Your window is made of of pixels... that hold X Y values.
You can get the XY values from your Mouse.
On a down_click get the values
Then they will drag the mouse around
When they release put the windows old XY location
on the new location that was taken when the user released the button.

You can even specify the XY values in the window to allow this Drag and Drop option. Note you wont get a Grey box like windows does... or the entire window wont move like in Linux. You'll have to figure that out.

I've done something like this before in VB... I did it so I could make a window that looked like an oval... not a box!

[unformed]

Brandito (and Wak, for an explanation): I know what you're talking about. I wrote something similar a while ago in VB, and about a week ago or so was trying to figure out how to do it in C.

In VB, you need to watch the position of the mouse, and then move the window accordingly because you can't readily intercept window messages (without subclassing, which can fairly compilcated).

what WM_NCHITTEST does is it's asking the program what kind of an object is below the cursor, so Windows knows how to respond.
For example, if you return HTMAXBUTTON, the Windows will think the user clicked on the Maximize button, and will hence maximize the window.

If you want the whole window to work as a caption, all you need to do is return HTCAPTION. (Note if you want a resizable window, you'll need to check if the cursor is over a border, and return the respective value, see below for all values)

Here's the MSDN listing for WM_NCHITTEST

LRESULT CALLBACK WindowProc(
  HWND hwnd,       // handle to window
  UINT uMsg,       // WM_NCHITTEST
  WPARAM wParam,   // not used
  LPARAM lParam    // horizontal and vertical position
);
Parameters
wParam  This parameter is not used. 
lParam  The low-order word specifies the x-coordinate of the cursor. The coordinate is relative to the upper-left corner of the screen. 
        The high-order word specifies the y-coordinate of the cursor. The coordinate is relative to the upper-left corner of the screen. 

Return Values

The return value of the DefWindowProc function is one of the following values, indicating the position of the cursor hot spot. 

HTBORDER      In the border of a window that does not have a sizing border. 
HTBOTTOM      In the lower-horizontal border of a resizable window (the user can click the mouse to resize the window vertically). 
HTBOTTOMLEFT  In the lower-left corner of a border of a resizable window (the user can click the mouse to resize the window diagonally). 
HTBOTTOMRIGHT In the lower-right corner of a border of a resizable window (the user can click the mouse to resize the window diagonally). 
HTCAPTION     In a title bar. 
HTCLIENT      In a client area. 
HTCLOSE       In a Close button. 
HTERROR       On the screen background or on a dividing line between windows (same as HTNOWHERE, except that the DefWindowProc function produces a system beep to indicate an error). 
HTGROWBOX     In a size box (same as HTSIZE). 
HTHELP        In a Help button. 
HTHSCROLL     In a horizontal scroll bar. 
HTLEFT        In the left border of a resizable window (the user can click the mouse to resize the window horizontally). 
HTMENU        In a menu. 
HTMAXBUTTON   In a Maximize button. 
HTMINBUTTON   In a Minimize button. 
HTNOWHERE     On the screen background or on a dividing line between windows. 
HTREDUCE      In a Minimize button. 
HTRIGHT       In the right border of a resizable window (the user can click the mouse to resize the window horizontally). 
HTSIZE        In a size box (same as HTGROWBOX). 
HTSYSMENU     In a window menu or in a Close button in a child window. 
HTTOP         In the upper-horizontal border of a window. 
HTTOPLEFT     In the upper-left corner of a window border. 
HTTOPRIGHT    In the upper-right corner of a window border. 
HTTRANSPARENT In a window currently covered by another window in the same thread (the message will be sent to underlying windows in the same thread until one of them returns a code that is not HTTRANSPARENT). 
HTVSCROLL     In the vertical scroll bar. 
HTZOOM        In a Maximize button.

hope all that makes sense...