Qt Windows 获取鼠标光标图标
Qt Windows get mouse cursor icon
我正在尝试在 QPixmap 中获取我的(全局)鼠标光标图标。
在阅读了 Qt 和 MSDN 文档后,我想到了这段代码:
我不确定混合使用 HCURSOR 和 HICON,但我看到了一些他们这样做的例子。
QPixmap MouseCursor::getMouseCursorIconWin()
{
CURSORINFO ci;
ci.cbSize = sizeof(CURSORINFO);
if (!GetCursorInfo(&ci))
qDebug() << "GetCursorInfo fail";
QPixmap mouseCursorPixmap = QtWin::fromHICON(ci.hCursor);
qDebug() << mouseCursorPixmap.size();
return mouseCursorPixmap;
}
但是,我的 mouseCursorPixmap 大小始终是 QSize(0,0)。
出了什么问题?
我不知道为什么上面的代码不起作用。
但是以下代码示例确实有效:
QPixmap MouseCursor::getMouseCursorIconWin()
{
// Get Cursor Size
int cursorWidth = GetSystemMetrics(SM_CXCURSOR);
int cursorHeight = GetSystemMetrics(SM_CYCURSOR);
// Get your device contexts.
HDC hdcScreen = GetDC(NULL);
HDC hdcMem = CreateCompatibleDC(hdcScreen);
// Create the bitmap to use as a canvas.
HBITMAP hbmCanvas = CreateCompatibleBitmap(hdcScreen, cursorWidth, cursorHeight);
// Select the bitmap into the device context.
HGDIOBJ hbmOld = SelectObject(hdcMem, hbmCanvas);
// Get information about the global cursor.
CURSORINFO ci;
ci.cbSize = sizeof(ci);
GetCursorInfo(&ci);
// Draw the cursor into the canvas.
DrawIcon(hdcMem, 0, 0, ci.hCursor);
// Convert to QPixmap
QPixmap cursorPixmap = QtWin::fromHBITMAP(hbmCanvas, QtWin::HBitmapAlpha);
// Clean up after yourself.
SelectObject(hdcMem, hbmOld);
DeleteObject(hbmCanvas);
DeleteDC(hdcMem);
ReleaseDC(NULL, hdcScreen);
return cursorPixmap;
}
我正在尝试在 QPixmap 中获取我的(全局)鼠标光标图标。
在阅读了 Qt 和 MSDN 文档后,我想到了这段代码:
我不确定混合使用 HCURSOR 和 HICON,但我看到了一些他们这样做的例子。
QPixmap MouseCursor::getMouseCursorIconWin()
{
CURSORINFO ci;
ci.cbSize = sizeof(CURSORINFO);
if (!GetCursorInfo(&ci))
qDebug() << "GetCursorInfo fail";
QPixmap mouseCursorPixmap = QtWin::fromHICON(ci.hCursor);
qDebug() << mouseCursorPixmap.size();
return mouseCursorPixmap;
}
但是,我的 mouseCursorPixmap 大小始终是 QSize(0,0)。 出了什么问题?
我不知道为什么上面的代码不起作用。
但是以下代码示例确实有效:
QPixmap MouseCursor::getMouseCursorIconWin()
{
// Get Cursor Size
int cursorWidth = GetSystemMetrics(SM_CXCURSOR);
int cursorHeight = GetSystemMetrics(SM_CYCURSOR);
// Get your device contexts.
HDC hdcScreen = GetDC(NULL);
HDC hdcMem = CreateCompatibleDC(hdcScreen);
// Create the bitmap to use as a canvas.
HBITMAP hbmCanvas = CreateCompatibleBitmap(hdcScreen, cursorWidth, cursorHeight);
// Select the bitmap into the device context.
HGDIOBJ hbmOld = SelectObject(hdcMem, hbmCanvas);
// Get information about the global cursor.
CURSORINFO ci;
ci.cbSize = sizeof(ci);
GetCursorInfo(&ci);
// Draw the cursor into the canvas.
DrawIcon(hdcMem, 0, 0, ci.hCursor);
// Convert to QPixmap
QPixmap cursorPixmap = QtWin::fromHBITMAP(hbmCanvas, QtWin::HBitmapAlpha);
// Clean up after yourself.
SelectObject(hdcMem, hbmOld);
DeleteObject(hbmCanvas);
DeleteDC(hdcMem);
ReleaseDC(NULL, hdcScreen);
return cursorPixmap;
}