client area

A message is a notification from Windows that tells the application something has happened. For example, clicking the mouse, changing the window size, and pressing a key on the keyboard will cause Windows to send a message to the application. The

Wm_null = $0000; Wm_create = $0001; The application creates a window Wm_destroy = $0002; A window is destroyed wm_move = $0003; Move a window wm_size = $0005; Change the size of a window wm_activate = $0006; A window is activated or inactive;

A message is a notification from Windows that tells the application something has happened. For example, clicking the mouse, changing the window size, and pressing a key on the keyboard will cause Windows to send a message to the application. The

A notification from Windows that tells the application something has happened. For example, clicking the mouse, changing the window size, and pressing a key on the keyboard will cause Windows to send a message to the application. The message itself

C # rewrite WndProc intercept send system message + Windows message constant value (1) #region intercept message//intercept message processing XP cannot shutdown problem protected override void WndProc (ref message Mes SAGE) {switch (message). MSG) {

Wm_null = 0x0000Wm_create = 0x0001Application creates a windowWm_destroy = 0x0002A window is destroyedWm_move = 0x0003Move a windowWm_size = 0x0005Change the size of a windowWm_activate = 0x0006A window is activated or inactiveWm_setfocus =

It is declared this way in the Windows unit: Type tmsg = Packed record Hwnd:hwnd; //Window Handle Message:uint; //Message constant identifier Wparam:wparam; Specific additional information for 32-bit messages Lparam:lparam; Specific additional

In other words, the Windows SDK does not seem to provide an API for setting the size of the customer zone in a window.Setwindowpos and movewindow can only set the size of the entire window.You cannot directly set the size of the customer zone.

The event handler is a callback function that is called in the main time loop when Windows has an event that needs to be handled in the form. The time-processing function handles whatever event you want to handle, and other events are passed to

The difference between SendMessage and PostMessagePostMessage is only responsible for putting messages into the message queue, not determining when and whether to process SendMessage to wait until the return code (DWORD type) is processed by the

Theory:A tooltip is a rectangular window that is displayed when the mouse hovers over a particular area. The ToolTip window contains the text that some programmers want to display. At this point, the ToolTip works the same as the status bar, but the

1.SystemParametersInfo functions can get and set a large number of Windows system parametersMFC can use the SystemParametersInfo (...) function to get and set system information, as shown in the following example, changing the height of the system

function function: This function sends the specified message to one or more windows. This function invokes the window program for the specified window until the window program finishes processing the message and returns. This function is one of the

In this lesson, we'll learn how to "draw" strings in the client area of a window. We will also learn about the "device environment" concept. Theory: The text in Windows is a GUI (graphical user interface) object. Each character is actually made up

In this lesson, we're going to learn how the Windows program handles keyboard messages. Theory: Because most PCs have only one keyboard, all running Windows programs must share it. WINDOWS will be responsible for sending keystroke messages to the

Hardware and system functions of the API Activatekeyboardlayout activates a new keyboard layout. The keyboard layout defines the position and meaning of the key on a physical keyboard Beep is used to generate simple sounds Chartooem converts a

Transferred from: http://hi.baidu.com/max_new/blog/item/e2bbe607b1f127c57b8947c0.htmlMany software, especially the desktop area is not very large software, usually provides a regular top-of-the-box features (perhaps the software is not so called,

Adjustwindowrect given a window style, calculates the window size needed to get the target client area rectangleAnypopup to determine if there are any pop-up windows on the screenArrangeiconicwindows a minimized child window that arranges a parent

GetWindowRect is the RECT coordinates of the window in the screen coordinate system (both client and non-client areas), which gives the window size and position relative to the upper-left corner of the screen (0,0).GetClientRect gets the rect

---restore content starts---One, draw and redraw1,windows does not preserve the contents of the window, when the window is overwritten and then restored, Windows sends the WM_PAINT Message notification window process to redraw the client area (the