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[ui] improve tooltip handling

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* only reference the HANDLE of the control the tooltip is associated with
This commit is contained in:
Pete Batard 2012-05-21 11:11:42 +01:00
parent 3fde2a5472
commit 4a74c9de38
4 changed files with 38 additions and 38 deletions
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27
src/stdlg.c
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@ -683,7 +683,8 @@ BOOL Notification(int type, char* title, char* format, ...)
}
static struct {
HWND hTip;
HWND hTip; // Tooltip handle
HWND hCtrl; // Handle of the control the tooltip belongs to
WNDPROC original_proc;
LPWSTR wstring;
} ttlist[MAX_TOOLTIPS] = { {0} };
@ -721,22 +722,25 @@ INT_PTR CALLBACK TooltipCallback(HWND hDlg, UINT message, WPARAM wParam, LPARAM
* duration sets the duration in ms. Use -1 for default
* message is an UTF-8 string
*/
HWND CreateTooltip(HWND hControl, const char* message, int duration)
BOOL CreateTooltip(HWND hControl, const char* message, int duration)
{
TOOLINFOW toolInfo = {0};
int i;
if ( (hControl == NULL) || (message == NULL) ) {
return (HWND)NULL;
return FALSE;
}
// Destroy existing tooltip if any
DestroyTooltip(hControl);
// Find an empty slot
for (i=0; i<MAX_TOOLTIPS; i++) {
if (ttlist[i].hTip == NULL) break;
}
if (i == MAX_TOOLTIPS) {
uprintf("Maximum number of tooltips reached\n");
return (HWND)NULL;
return FALSE;
}
// Create the tooltip window
@ -745,8 +749,9 @@ HWND CreateTooltip(HWND hControl, const char* message, int duration)
hMainInstance, NULL);
if (ttlist[i].hTip == NULL) {
return (HWND)NULL;
return FALSE;
}
ttlist[i].hCtrl = hControl;
// Subclass the tooltip to handle multiline
ttlist[i].original_proc = (WNDPROC)SetWindowLongPtr(ttlist[i].hTip, GWLP_WNDPROC, (LONG_PTR)TooltipCallback);
@ -765,22 +770,24 @@ HWND CreateTooltip(HWND hControl, const char* message, int duration)
toolInfo.lpszText = LPSTR_TEXTCALLBACKW;
SendMessageW(ttlist[i].hTip, TTM_ADDTOOLW, 0, (LPARAM)&toolInfo);
return ttlist[i].hTip;
return TRUE;
}
void DestroyTooltip(HWND hWnd)
/* Destroy a tooltip. hCtrl = handle of the control the tooltip is associated with */
void DestroyTooltip(HWND hControl)
{
int i;
if (hWnd == NULL) return;
if (hControl == NULL) return;
for (i=0; i<MAX_TOOLTIPS; i++) {
if (ttlist[i].hTip == hWnd) break;
if (ttlist[i].hCtrl == hControl) break;
}
if (i == MAX_TOOLTIPS) return;
DestroyWindow(hWnd);
DestroyWindow(ttlist[i].hTip);
safe_free(ttlist[i].wstring);
ttlist[i].original_proc = NULL;
ttlist[i].hTip = NULL;
ttlist[i].hCtrl = NULL;
}
void DestroyAllTooltips(void)