Insert mouse coordinates into table on click

INSERT MOUSE COORDINATES INTO TABLE ON CLICK CODE
INSERT MOUSE COORDINATES INTO TABLE ON CLICK PLUS
INSERT MOUSE COORDINATES INTO TABLE ON CLICK WINDOWS

Left button downДЇor the left-button down message, do the following: OnMouseMove(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam), (DWORD)wParam) ДЇinally, implement the message handlers themselves. OnLButtonDown(GET_X_LPARAM(lParam), GET_Y_LPARAM(lParam), (DWORD)wParam) Now add the message handlers to your window procedure.

Call DPIScale::PixelsToDipsX and DPIScale::PixelsToDipsY to convert pixels to DIPs.

These macros are defined in WindowsX.h, so remember to include that header in your project.

Use the GET_X_LPARAM and GET_Y_LPARAM macros to get the pixel coordinates.

To get the mouse coordinates in DIPs from the mouse messages, do the following: If (FAILED(D2D1CreateFactory(D2D1_FACTORY_TYPE_SINGLE_THREADED, &pFactory))) Return D2D1::Point2F(static_cast(x) / scale, static_cast(y) / scale) Д¬all DPIScale::Initialize in your WM_CREATE handler, after you create the Direct2D factory object. Static D2D1_POINT_2F PixelsToDips(T x, T y)

INSERT MOUSE COORDINATES INTO TABLE ON CLICK CODE

The following code shows a helper class that converts pixels into DIPs. For more discussion about DPI, see DPI and Device-Independent Pixels. To handle high-DPI settings correctly, you must translate the pixel coordinates into DIPs. Mouse coordinates are given in physical pixels, but Direct2D expects device-independent pixels (DIPs). Void OnMouseMove(int pixelX, int pixelY, DWORD flags) void OnLButtonDown(int pixelX, int pixelY, DWORD flags) Next, declare message handlers for the left-button down, left-button up, and mouse-move messages. Remove the body of the MainWindow::CalculateLayout method it's not required for this example. MainWindow() : pFactory(NULL), pRenderTarget(NULL), pBrush(NULL),Д®llipse(D2D1::Ellipse(D2D1::Point2F(), 0, 0)), In the MainWindow constructor, initialize the ellipse and ptMouse variables. This variable stores the mouse-down position while the user is dragging the mouse. First, add a new member variable to the MainWindow class. We will modify the code in this sample to add simple drawing. Start with the Direct2D Circle Sample program. Let's extend the Circle program from Module 3 by enabling the user to draw a circle with the mouse.

When the user releases the left mouse button, call ReleaseCapture.

When the user presses the left mouse button, call SetCapture to start capturing the mouse.You would typically use SetCapture and ReleaseCapture in the following way. To release mouse capture, call the ReleaseCapture function. The capture window must be the foreground window, and only one window can be the capture window at a time. After this function is called, the window will continue to receive WM_MOUSEMOVE messages for as long as the user holds at least one mouse button down, even if the mouse moves outside the window. To receive mouse-move messages past the edge of the window, call the SetCapture function. For example, a drawing program might enable the user to drag the selection rectangle beyond the edge of the window, as shown in the following diagram. But for some operations, you might need to track the mouse position beyond this point. Capturing mouse movement outside the windowД«y default, a window stops receiving WM_MOUSEMOVE messages if the mouse moves past the edge of the client area. One consequence of this behavior is that the mouse coordinates might not change between WM_MOUSEMOVE messages. For example, if the cursor is positioned over a window, and the user hides the window, the window receives WM_MOUSEMOVE messages even if the mouse did not move. Later in this topic, we will look at code that converts between the two units.ДЄ window can also receive a WM_MOUSEMOVE message if the position of the cursor changes relative to the window. Remember that these coordinates are in pixels, not device-independent pixels (DIPs).

The following code gets the mouse coordinates from lParam.

INSERT MOUSE COORDINATES INTO TABLE ON CLICK PLUS

The wParam parameter contains a bitwise OR of flags, indicating the state of the other mouse buttons plus the SHIFT and CTRL keys. Use the GET_X_LPARAM and GET_Y_LPARAM macros to unpack the coordinates from lParam. The lowest 16 bits of lParam contain the x-coordinate, and the next 16 bits contain the y-coordinate. The WM_MOUSEMOVE message contains the same parameters as the messages for mouse clicks. You can override this behavior by capturing the mouse, which is described in the next section. By default, WM_MOUSEMOVE goes to the window that contains the cursor.

INSERT MOUSE COORDINATES INTO TABLE ON CLICK WINDOWS

When the mouse moves, Windows posts a WM_MOUSEMOVE message.

Insert mouse coordinates into table on click