C # copy QQ pop-up news box

When you open QQ, the pop-up form of QQ news will slowly rise up a small window in the lower right corner of the screen, occupying a small space, which can serve as a prompt. Next let's take a look at how to use system APIs to easily implement this function.
API prototype functions:
Bool AnimateWindow (IntPtr hwnd, int dwTime, int dwFlags );
Literally, this function is called "Window of activity". In fact, this function can enrich the form actions, to use winApi in c #, first introduce the namespace:

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// Introduce the namespace
Using System. Runtime. InteropServices;
// API prototype
[DllImport ("user32.dll")]
Private static extern bool AnimateWindow (IntPtr hwnd, int dateTime, int dwFlags); // hwnd window handle. dateTime: animation duration. dwFlags: animation type combination
// Introduce the namespace
Using System. Runtime. InteropServices;
// API prototype
[DllImport ("user32.dll")]
Private static extern bool AnimateWindow (IntPtr hwnd, int dateTime, int dwFlags); // hwnd window handle. dateTime: animation duration. dwFlags: animation type combination

The following are various animated symbols of dwFlags:

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Int AW_ACTIVE = 0x20000; // activation window. Do not use this flag after the AW_HIDE flag is used.
Int AW_HIDE = 0x10000; // hide the window
Int AW_BLEND = 0x80000; // fade in and out
Int AW_SLIDE = 0x40000; // use the sliding animation effect. The default value is the scroll animation type. When the AW_CENTER flag is used, this flag is ignored.
Int AW_CENTER = 0x0010; // If the AW_HIDE flag is used, the window overlaps inward; otherwise, the window expands outward.
Int AW_HOR_POSITIVE = 0x0001; // display the window from left to right. This flag can be used in rolling and sliding animations. Ignore this flag when using the AW_CENTER flag
Int AW_HOR_NEGATIVE = 0x0002; // a window is displayed from the right to the left. This flag can be used in rolling and sliding animations. Ignore this flag when using the AW_CENTER flag
Int AW_VER_POSITIVE = 0x0004; // display the window from top to bottom. This flag can be used in rolling and sliding animations. Ignore this flag when using the AW_CENTER flag
Int AW_VER_NEGATIVE = 0x0008; // display the window from bottom to top. This flag can be used in rolling and sliding animations. Ignore this flag when using the AW_CENTER flag
Int AW_ACTIVE = 0x20000; // activation window. Do not use this flag after the AW_HIDE flag is used.
Int AW_HIDE = 0x10000; // hide the window
Int AW_BLEND = 0x80000; // fade in and out
Int AW_SLIDE = 0x40000; // use the sliding animation effect. The default value is the scroll animation type. When the AW_CENTER flag is used, this flag is ignored.
Int AW_CENTER = 0x0010; // If the AW_HIDE flag is used, the window overlaps inward; otherwise, the window expands outward.
Int AW_HOR_POSITIVE = 0x0001; // display the window from left to right. This flag can be used in rolling and sliding animations. Ignore this flag when using the AW_CENTER flag
Int AW_HOR_NEGATIVE = 0x0002; // a window is displayed from the right to the left. This flag can be used in rolling and sliding animations. Ignore this flag when using the AW_CENTER flag
Int AW_VER_POSITIVE = 0x0004; // display the window from top to bottom. This flag can be used in rolling and sliding animations. Ignore this flag when using the AW_CENTER flag
Int AW_VER_NEGATIVE = 0x0008; // display the window from bottom to top. This flag can be used in rolling and sliding animations. Ignore this flag when using the AW_CENTER flag


Declare variables to save the coordinates displayed in the form:

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Private int currentX; // abscissa
Private int currentY; // y coordinate
Private int screenHeight; // screen height
Private int screenWidth; // screen width
Private int currentX; // abscissa
Private int currentY; // y coordinate
Private int screenHeight; // screen height
Private int screenWidth; // screen width


Execute an animation in the load event:

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Rectangle rect = Screen. PrimaryScreen. WorkingArea;
ScreenHeight = rect. Height;
ScreenWidth = rect. Width;
CurrentX = screenWidth-this. Width;
CurrentY = screenHeight-this. Height;
This. Location = new System. Drawing. Point (currentX, currentY );

AnimateWindow (this. Handle, 1000, AW_SLIDE | AW_VER_NEGATIVE );
Rectangle rect = Screen. PrimaryScreen. WorkingArea;
ScreenHeight = rect. Height;
ScreenWidth = rect. Width;
CurrentX = screenWidth-this. Width;
CurrentY = screenHeight-this. Height;
This. Location = new System. Drawing. Point (currentX, currentY );

AnimateWindow (this. Handle, 1000, AW_SLIDE | AW_VER_NEGATIVE );

Try it!