client area

Create client Area window Drag and drop operations between list boxes How does the system identify a client or non-client area of a window when sending a painting (paint) message? When I use:: CreateWindow to create a window, how to

The form is divided into two parts: the client area and the non-client zone (non-client area)The WM_PAINT message, OnPaint () method, GetDC () API functions are all processed by the client area of the form.The title bar is in the non-client area, so

When you design an application, you may want the user to be able to drag the form through the client area, such as when the form does not have a title bar or create an irregular form, and the form is dragged through the client area. A good example

#define WINDOW_WIDTH 800#define Window_height 600Windows (non-client area) that are set up with a length of So when we use the function GetClientRect (hwnd, &rect) to get the client area size rect.right for 782 rect.bottom for 555So if you want to

The interface display program in the client area is in the processing of the WM_PAINT message placed in the callback function, and the Windows system sends an WM_PAINT message to the application window when the client area needs to be redrawn. When

Unit Unit1; Interface UsesWindows, Messages, sysutils, variants, Classes, Graphics, Controls, Forms,Dialogs, Stdctrls; TypeTForm1 = Class (Tform)Button1:tbutton;Button2:tbutton;Button3:tbutton;Procedure Button1Click (Sender:tobject);Procedure Button2

Building an MFC ApplicationChoose a Dialog based boxAdd a button Three edit box, three edit boxes to display the system time, the cursor in the location of Windows, the cursor in the client position.Change the button's captain to Time,id to Idc_time.

Windows window styles have relatively fixed form styles in windows. Of course, these styles may be greatly changed according to the windows theme, just like the skin. However, windows also provides some APIs that allow us to modify the default form

You must first understand the message passing mechanism of windows, and when there is a mouse activity message, the system sends a WM_NCHITTEST message to the form as the basis for judging the occurrence of the message. If you click on the title bar,

The VC form is drawn onncpaint (UINT message, WPARAM WPARAM, LPARAM LPARAM) for non-client areas. void Cskinandlangdlg::onncpaint (UINT message, WPARAM WPARAM, LPARAM LPARAM) {HDC WINDOWDC =:: GETWINDOWDC (m_hwnd ); Gets the entire form

Implementation results:This is actually a very common function, everyone will consider to their own simple project to do a background interface. In fact, just overload the OnEraseBkgnd () function in the view class.The code is as follows:BOOL

The first one implements the basic processing. The width of the form border is somewhat enlarged and needs to be thin.Realize:1, change the width of the frame line (wm_nccalcsize)2. Change the frame style (wm_windowposchanging)The purpose can be

See a description of how to move a form in a non-customer area, both overloading wm_nchittest and returning htcaption. But I think there's something wrong with the right mouse button function. Here I introduce a method, you can already move the form

Win32API Common messages Win32 messages are roughly divided into 3 different functions.More than 10 years ago online chat: Who are you? What do you do for a job? Do you have a boyfriend? (No telework) 1 Under what

Message Range Description 0 ~ wm_user–1 System messages Wm_user ~ 0x7FFF Custom window class integer messages Wm_app ~ 0xBFFF

Message Range Description 0 ~ wm_user–1 System messages Wm_user ~ 0x7FFF Custom window class integer messages Wm_app ~ 0xBFFF Application Custom Messages 0xc000 ~ 0xFFFF

' ========================================' Windows-specific message constant identifiers' ========================================Public Const wm_null = &H0&Public Const wm_create = &H1& ' application creates a windowPublic Const Wm_destroy = &H2& '

C # rewrite WndProc intercept send system messages + Windows message constant value (1)#region Intercept messagesIntercept message processing XP does not shutdown problemprotected override void WndProc (ref message message){Switch (message.

GetClientRect (HWND, rect*)---Get the client area size of the window, Left,top always 0,bottom is the client area height, right is the customer area widthGetWindowRect (HWND, rect*)---Coordinates of the window relative to the upper-left corner of

Typetmsg = Packed recordHwnd:hwnd; Window handlemessage:uint;//Message constant identifierWparam:wparam;//Specific additional information for 32-bit messagesLparam:lparam;//Specific additional information for 32-bit messagestime:dword;//time when