38 lines
856 B
C
38 lines
856 B
C
// 17 july 2014
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#include "winapi_windows.h"
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#include "_cgo_export.h"
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LRESULT getWindowTextLen(HWND hwnd)
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{
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return SendMessageW(hwnd, WM_GETTEXTLENGTH, 0, 0);
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}
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void getWindowText(HWND hwnd, WPARAM n, LPWSTR buf)
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{
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SetLastError(0);
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if (SendMessageW(hwnd, WM_GETTEXT, n + 1, (LPARAM) buf) != n)
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xpanic("WM_GETTEXT did not copy the correct number of characters out", GetLastError());
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}
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void setWindowText(HWND hwnd, LPWSTR text)
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{
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switch (SendMessageW(hwnd, WM_SETTEXT, 0, (LPARAM) text)) {
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case FALSE:
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xpanic("WM_SETTEXT failed", GetLastError());
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}
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}
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void updateWindow(HWND hwnd)
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{
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if (UpdateWindow(hwnd) == 0)
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xpanic("error calling UpdateWindow()", GetLastError());
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}
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void storelpParam(HWND hwnd, LPARAM lParam)
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{
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CREATESTRUCTW *cs = (CREATESTRUCTW *) lParam;
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SetWindowLongPtrW(hwnd, GWLP_USERDATA, (LONG_PTR) (cs->lpCreateParams));
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}
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