是這樣的,我打算制作一個游戲的輔助工具,想用DrawText在游戲中提示一些文本,可是每次Draw完后就被游戲重繪了(消失了),即使是時鐘1ms繪制一次依然會明顯的看出被一次一次的重繪掉,這個怎么解決?(我是VB6)
部分代碼:
Private Sub Form_Click()
Timer1.Interval = 1
End Sub
Private Sub Timer1_Timer()
Dim hwnd!, hdc&
hwnd = FindWindow("IDCLASS", vbNullString)
hdc = GetDC(hwnd)
GetClientRect hwnd, a
SetTextColor hdc, vbRed
SetBkMode hdc, 1
DrawText hdc, "aaaaaaaaaaa", 6, a, 1&
End Sub
感激不盡
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創建一個透明視窗放在游戲視窗的上面？uj5u.com熱心網友回復：
如何做?用到那些api?我是新手請不吝賜教
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SetWindowPosThe SetWindowPos function changes the size, position, and Z order of a child, pop-up, or top-level window. Child, pop-up, and top-level windows are ordered according to their appearance on the screen. The topmost window receives the highest rank and is the first window in the Z order.
BOOL SetWindowPos(
HWND hWnd, // handle to window
HWND hWndInsertAfter, // placement-order handle
int X, // horizontal position
int Y, // vertical position
int cx, // width
int cy, // height
UINT uFlags // window-positioning flags
);
Parameters
hWnd
Handle to the window.
hWndInsertAfter
Handle to the window to precede the positioned window in the Z order. This parameter must be a window handle or one of the following values: Value Meaning
HWND_BOTTOM Places the window at the bottom of the Z order. If the hWnd parameter identifies a topmost window, the window loses its topmost status and is placed at the bottom of all other windows.
HWND_NOTOPMOST Places the window above all non-topmost windows (that is, behind all topmost windows). This flag has no effect if the window is already a non-topmost window.
HWND_TOP Places the window at the top of the Z order.
HWND_TOPMOST Places the window above all non-topmost windows. The window maintains its topmost position even when it is deactivated.
For more information about how this parameter is used, see the following Remarks section.
X
Specifies the new position of the left side of the window, in client coordinates.
Y
Specifies the new position of the top of the window, in client coordinates.
cx
Specifies the new width of the window, in pixels.
cy
Specifies the new height of the window, in pixels.
uFlags
Specifies the window sizing and positioning flags. This parameter can be a combination of the following values: Value Meaning
SWP_ASYNCWINDOWPOS If the calling thread does not own the window, the system posts the request to the thread that owns the window. This prevents the calling thread from blocking its execution while other threads process the request.
SWP_DEFERERASE Prevents generation of the WM_SYNCPAINT message.
SWP_DRAWFRAME Draws a frame (defined in the window's class description) around the window.
SWP_FRAMECHANGED Sends a WM_NCCALCSIZE message to the window, even if the window's size is not being changed. If this flag is not specified, WM_NCCALCSIZE is sent only when the window's size is being changed.
SWP_HIDEWINDOW Hides the window.
SWP_NOACTIVATE Does not activate the window. If this flag is not set, the window is activated and moved to the top of either the topmost or non-topmost group (depending on the setting of the hWndInsertAfter parameter).
SWP_NOCOPYBITS Discards the entire contents of the client area. If this flag is not specified, the valid contents of the client area are saved and copied back into the client area after the window is sized or repositioned.
SWP_NOMOVE Retains the current position (ignores the X and Y parameters).
SWP_NOOWNERZORDER Does not change the owner window's position in the Z order.
SWP_NOREDRAW Does not redraw changes. If this flag is set, no repainting of any kind occurs. This applies to the client area, the nonclient area (including the title bar and scroll bars), and any part of the parent window uncovered as a result of the window being moved. When this flag is set, the application must explicitly invalidate or redraw any parts of the window and parent window that need redrawing.
SWP_NOREPOSITION Same as the SWP_NOOWNERZORDER flag.
SWP_NOSENDCHANGING Prevents the window from receiving the WM_WINDOWPOSCHANGING message.
SWP_NOSIZE Retains the current size (ignores the cx and cy parameters).
SWP_NOZORDER Retains the current Z order (ignores the hWndInsertAfter parameter).
SWP_SHOWWINDOW Displays the window.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, callGetLastError.
Remarks
If the SWP_SHOWWINDOW or SWP_HIDEWINDOW flag is set, the window cannot be moved or sized.
If you have changed certain window data using SetWindowLong, you must call SetWindowPos to have the changes take effect. Use the following combination for uFlags: SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED.
A window can be made a topmost window either by setting the hWndInsertAfter parameter to HWND_TOPMOST and ensuring that the SWP_NOZORDER flag is not set, or by setting a window's position in the Z order so that it is above any existing topmost windows. When a non-topmost window is made topmost, its owned windows are also made topmost. Its owners, however, are not changed.
If neither the SWP_NOACTIVATE nor SWP_NOZORDER flag is specified (that is, when the application requests that a window be simultaneously activated and its position in the Z order changed), the value specified in hWndInsertAfter is used only in the following circumstances:
Neither the HWND_TOPMOST nor HWND_NOTOPMOST flag is specified in hWndInsertAfter.
The window identified by hWnd is not the active window.
An application cannot activate an inactive window without also bringing it to the top of the Z order. Applications can change an activated window's position in the Z order without restrictions, or it can activate a window and then move it to the top of the topmost or non-topmost windows.
If a topmost window is repositioned to the bottom (HWND_BOTTOM) of the Z order or after any non-topmost window, it is no longer topmost. When a topmost window is made non-topmost, its owners and its owned windows are also made non-topmost windows.
A non-topmost window can own a topmost window, but the reverse cannot occur. Any window (for example, a dialog box) owned by a topmost window is itself made a topmost window, to ensure that all owned windows stay above their owner.
If an application is not in the foreground, and should be in the foreground, it must call the SetForegroundWindow function.
Windows CE: If this is a visible top-level window, and the SWP_NOACTIVATE flag is not specified, this function will activate the window. If this is the currently active window, and either the SWP_NOACTIVATE flag or the SWP_HIDEWINDOW flag is specified, the activation is passed on to another visible top-level window.
When you set the SWP_FRAMECHANGED flag in the nFlags parameter to this function, Windows CE redraws the entire non-client area of the window, which may change the size of the client area. This is the only way to get the non-client area to be recalculated and is typically used after a you've changed the window style by calling SetWindowLong.
SetWindowPos will always cause a WM_WINDOWPOSCHANGED message to be sent to the window. The flags passed in this message are exactly the same as those passed into the function. No other messages are sent by this function.
Windows CE 1.0 does not support the HWND_TOPMOST and HWND_NOTOPMOST constants in the hwndInsertAfter parameter.
Windows CE 1.0 does not support the SWP_DRAWFRAME or SWP_NOCOPYBITS flags in the fuFlags paramete.
QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
Import Library: Use user32.lib.
See Also
Windows Overview, Window Functions, MoveWindow, SetActiveWindow, SetForegroundWindow
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CreateWindowExThe CreateWindowEx function creates an overlapped, pop-up, or child window with an extended style; otherwise, this function is identical to the CreateWindow function. For more information about creating a window and for full descriptions of the other parameters of CreateWindowEx, see CreateWindow.
HWND CreateWindowEx(
DWORD dwExStyle, // extended window style
LPCTSTR lpClassName, // pointer to registered class name
LPCTSTR lpWindowName, // pointer to window name
DWORD dwStyle, // window style
int x, // horizontal position of window
int y, // vertical position of window
int nWidth, // window width
int nHeight, // window height
HWND hWndParent, // handle to parent or owner window
HMENU hMenu, // handle to menu, or child-window identifier
HINSTANCE hInstance, // handle to application instance
LPVOID lpParam // pointer to window-creation data
);
Parameters
dwExStyle
Specifies the extended style of the window. This parameter can be one of the following values: Style Meaning
WS_EX_ACCEPTFILES Specifies that a window created with this style accepts drag-drop files.
WS_EX_APPWINDOW Forces a top-level window onto the taskbar when the window is visible.
WS_EX_CLIENTEDGE Specifies that a window has a border with a sunken edge.
WS_EX_CONTEXTHELP Includes a question mark in the title bar of the window. When the user clicks the question mark, the cursor changes to a question mark with a pointer. If the user then clicks a child window, the child receives a WM_HELP message. The child window should pass the message to the parent window procedure, which should call the WinHelp function using the HELP_WM_HELP command. The Help application displays a pop-up window that typically contains help for the child window.
WS_EX_CONTEXTHELP cannot be used with the WS_MAXIMIZEBOX or WS_MINIMIZEBOX styles.
WS_EX_CONTROLPARENT Allows the user to navigate among the child windows of the window by using the tab key.
WS_EX_DLGMODALFRAME Creates a window that has a double border; the window can, optionally, be created with a title bar by specifying the WS_CAPTION style in the dwStyle parameter.
WS_EX_LEFT Window has generic "left-aligned" properties. This is the default.
WS_EX_LEFTSCROLLBAR If the shell language is Hebrew, Arabic, or another language that supports reading order alignment, the vertical scroll bar (if present) is to the left of the client area. For other languages, the style is ignored and not treated as an error.
WS_EX_LTRREADING The window text is displayed using Left to Right reading-order properties. This is the default.
WS_EX_MDICHILD Creates an MDI child window.
WS_EX_NOPARENTNOTIFY Specifies that a child window created with this style does not send the WM_PARENTNOTIFY message to its parent window when it is created or destroyed.
WS_EX_OVERLAPPEDWINDOW Combines the WS_EX_CLIENTEDGE and WS_EX_WINDOWEDGE styles.
WS_EX_PALETTEWINDOW Combines the WS_EX_WINDOWEDGE, WS_EX_TOOLWINDOW, and WS_EX_TOPMOST styles.
WS_EX_RIGHT The window has generic "right-aligned" properties. This depends on the window class. This style has an effect only if the shell language is Hebrew, Arabic, or another language that supports reading order alignment; otherwise, the style is ignored and not treated as an error.
WS_EX_RIGHTSCROLLBAR Vertical scroll bar (if present) is to the right of the client area. This is the default.
WS_EX_RTLREADING If the shell language is Hebrew, Arabic, or another language that supports reading order alignment, the window text is displayed using Right to Left reading-order properties. For other languages, the style is ignored and not treated as an error.
WS_EX_STATICEDGE Creates a window with a three-dimensional border style intended to be used for items that do not accept user input.
WS_EX_TOOLWINDOW Creates a tool window; that is, a window intended to be used as a floating toolbar. A tool window has a title bar that is shorter than a normal title bar, and the window title is drawn using a smaller font. A tool window does not appear in the taskbar or in the dialog that appears when the user presses alt+tab. If a tool window has a system menu, its icon is not displayed on the title bar. However, you can display the system menu by right-clicking or by typing alt+space.
WS_EX_TOPMOST Specifies that a window created with this style should be placed above all non-topmost windows and should stay above them, even when the window is deactivated. To add or remove this style, use the SetWindowPos function.
WS_EX_TRANSPARENT Specifies that a window created with this style should not be painted until siblings beneath the window (that were created by the same thread) have been painted. The window appears transparent because the bits of underlying sibling windows have already been painted.
To achieve transparency without these restrictions, use theSetWindowRgn function.
WS_EX_WINDOWEDGE Specifies that a window has a border with a raised edge.
Using the WS_EX_RIGHT style for static or edit controls has the same effect as using the SS_RIGHT or ES_RIGHT style, respectively. Using this style with button controls has the same effect as using BS_RIGHT and BS_RIGHTBUTTON styles.
lpClassName
……
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